Topic: Hacking (Read 5258 times)

Quote from: leowonderful on February 23, 2016, 07:38:24 PM

I keep seeing all these posts that someone can hack my wallet. First I did not think that this could be done? If it can be done, how can I prevent it from happening? Does my wallet need to be online in order for them to be able to hack it or can they still hack a paper wallet?

I've recently downloaded The Electrum wallet.
And u have the option there to make a double authenticator wallet.
So you always have to double authenticate with your phone.
So if someone wants to steal your Bitcoins, he will need your private key and your phone.
That way someone on the other side of the world cant hack ur wallet.

RealBitcoin

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If you're serious as fuck about your bitcoins, consider a hardware wallet like trezor. Paper wallets can always be lost or drenched in water (yup, happened to me before). Hardware wallets are pretty strong and have lasted me a year or two. I plan to buy two hardware wallets soon in fact

WTF, drop it in water?

How about making multiple copies of it, perhaps writing it down on a laminated paper with a market to be water proof.

If you keep it on a small note paper somewhere in the house then of course it gets messed up.

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I keep seeing all these posts that someone can hack my wallet. First I did not think that this could be done? If it can be done, how can I prevent it from happening? Does my wallet need to be online in order for them to be able to hack it or can they still hack a paper wallet?

yes a paper wallet could be hacked : the attacker just need the private key, and could obtain it if you dont print it securely.. , of if you generate it online .. you see ?

btcltccoins

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Quote from: ?? on ??

Quote from: aardvark15 on February 23, 2016, 05:26:14 PM

I keep seeing all these posts that someone can hack my wallet. First I did not think that this could be done? If it can be done, how can I prevent it from happening? Does my wallet need to be online in order for them to be able to hack it or can they still hack a paper wallet?

as far as I know hacking wallet can be done if someone know your email and passwd,then asking password recovery on the online wallet site,this one can be prevented by activating 2 factor authentication and sms message notification

Well its not that easy to know the password of wallet, email and then SMS.
I little carefulness is setting up all these can save our accounts from being hacked.

btcltccoins

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There are also situations where you use a wallet on an exchange that gets hacked so you are relying on their security that was flawed.

We cant say that the online wallet which was hacked, its security would be still the same. It maybe possible that they have upgraded their system and now there is no loop hole in the system. Secondly we cant only blame the online wallet security for it. What if we don't keep password difficult and secure, as it should be.

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Quote from: leowonderful on February 23, 2016, 07:38:24 PM

If you're serious as fuck about your bitcoins, consider a hardware wallet like trezor. Paper wallets can always be lost or drenched in water (yup, happened to me before). Hardware wallets are pretty strong and have lasted me a year or two. I plan to buy two hardware wallets soon in fact

This is a good idea but how much this hardware costs? is it handy and convenient to use? im curious about this bitcoin harware wallet Wink

Amph

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Quote from: aardvark15 on February 23, 2016, 05:26:14 PM

There are also situations where you use a wallet on an exchange that gets hacked so you are relying on their security that was flawed.

store them only for trading and small amount and activate auto withdrawal on your cold storage

Quote from: btcltccoins on February 23, 2016, 11:49:44 AM

Yes storing in cold wallet is the most secure way. The only disadvantage of using cold wallet is that if you have to do lots of transactions then it takes a lot of time. Otherwise cold wallets are best for savings.

another disadvantage is to remember thta the key pool contain only 100 key so if ou keep create new key to receive new funds on your cold storage and forget to do a backup after 100 key your next transaction will be lost when you want to use that back up again

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Quote from: tyz on January 03, 2016, 06:24:44 AM

Those hacking method are mostly brute force. You usually encrypt your wallet with a password. If your password is short (less than 8 characters ) it could be cracked by brute force methods. It needs a while, and the hacker needs a computer with lot of power, but it is possible. Especially, if the hackers knows the length and some chars of the password.
To get sure, choose a password of at least 12 characters including letters, numbers and special characters.

then don't forget to activate two factors authenticator, and use email or phone confirm to open your online wallet. it will be safer.

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If you're serious as fuck about your bitcoins, consider a hardware wallet like trezor. Paper wallets can always be lost or drenched in water (yup, happened to me before). Hardware wallets are pretty strong and have lasted me a year or two. I plan to buy two hardware wallets soon in fact

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There are also situations where you use a wallet on an exchange that gets hacked so you are relying on their security that was flawed.

btcltccoins

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Yes storing in cold wallet is the most secure way. The only disadvantage of using cold wallet is that if you have to do lots of transactions then it takes a lot of time. Otherwise cold wallets are best for savings.

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Quote from: CryptoGore on February 23, 2016, 11:31:00 AM

Always secure in offline your private keys or backups.

Never trust any other website which hold your BTC 100%, cuase we seen to many times exchanges and many other services going down with all the investor money.

And to reply to your question an hacker could stole your wallet really easy, so at least protect with a good password, so that it will be nearly impossible to break if it is enough resistant.

I think offline is the best to hold bitcoin. Yeah it is true don't trust any website which hold your bitcoins also the online web wallet there's a possibility that the site will be down and they will announce that their website is hacked..
So offline wallet is still the best to hold bitcoins. and secured it. So that you are in far from hackers..

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Always secure in offline your private keys or backups.

Never trust any other website which hold your BTC 100%, cuase we seen to many times exchanges and many other services going down with all the investor money.

And to reply to your question an hacker could stole your wallet really easy, so at least protect with a good password, so that it will be nearly impossible to break if it is enough resistant.

btcltccoins

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Spliting coins in different online wallet is a good idea. Also i recommend to use a strong password.
and never share your password with anyone. Most of the time Hacking is done because of our lack of responsibility.
Follow the best principles of Passwords and your wallet will be safe.

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Quote from: ?? on ??

Quote from: Aamir1 on February 23, 2016, 10:24:29 AM

Quote from: Shinpako09 on February 13, 2016, 11:22:19 PM

Hacking is very hard to prevent once they target and focus on yours. The best thing you can do is to split your bitcoin into different addresses you have.

That's right, if you are targeted by a hacker then you can't really save yourself forever, he will not leave you if he see much coins in your wallet, better to split them in different wallets and different places, keep some in cold wallets and some in online wallets. You will feel safer that way.

To be fully safe from a hacker get a paper wallet and put all of your funds onto it, That way a hacker will have zero chance of stealing your coins unless he breaks into your house and knows exactly where to look.

Well i myself never used a paper wallet and i even have no idea about it actually works or how to use one, but it is also safe to split your coins in different wallets because if one get hacked then your other coins will be safe, and try to split them in small parts as you could lose much if any of them get hacked in case.

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Quote from: Shinpako09 on February 13, 2016, 11:22:19 PM

Hacking is very hard to prevent once they target and focus on yours. The best thing you can do is to split your bitcoin into different addresses you have.

That's right, if you are targeted by a hacker then you can't really save yourself forever, he will not leave you if he see much coins in your wallet, better to split them in different wallets and different places, keep some in cold wallets and some in online wallets. You will feel safer that way.

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Quote from: Shinpako09 on February 13, 2016, 11:22:19 PM

Hacking is very hard to prevent once they target and focus on yours. The best thing you can do is to split your bitcoin into different addresses you have.

yes it was one of the best ways, do not save all bitcoin on one wallet and also do not forget to always use double security.

Shinpako09

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Hacking is very hard to prevent once they target and focus on yours. The best thing you can do is to split your bitcoin into different addresses you have.

aardvark15

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Be careful with exchanges. You never know who to trust. If you use one, don't put much on it. I lost some bitcoins in Cryptsy.

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Quote from: romero121 on February 09, 2016, 03:36:31 AM

I keep seeing all these posts that someone can hack my wallet. First I did not think that this could be done? If it can be done, how can I prevent it from happening? Does my wallet need to be online in order for them to be able to hack it or can they still hack a paper wallet?

paper wallet is secured to be hacked. if you worried about your online or desktop wallet. than go for a paper wallet.

Herbert2020

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This is the high risk that bitcoin is facing. Hacking is very serious issue, even there are hackers who are into teaching users how to hack and get into someones account for certain fixed amount. Once a person gets into it he does it continuously which make him master in it. So to get rid of it using offline wallets are better.

but this is not limited to bitcoin, all the online activity that one does is susceptible to hacking. this can be using bitcoin or using your credit card information. there is a lot of stories about stolen credit cards and all the money laundering that robbers do with those information like buying goods with stolen credit card and selling it for cash.

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Quote from: Amph on February 09, 2016, 03:32:52 AM

Quote from: RealBitcoin on February 06, 2016, 01:48:09 PM

Quote from: shorena on February 06, 2016, 01:46:02 PM

Quote from: RealBitcoin on February 06, 2016, 11:00:38 AM

Quote from: shorena on February 05, 2016, 12:39:44 PM

Quote from: RealBitcoin on February 05, 2016, 08:55:57 AM

-snip-
I see, well, dont print out sensitive info with 3rd party printers ever.

There are many shops that offer printing services, but one has to be a fool to print out sentitive data with them.

Only use your own printer (not even your neighbors) to print out sensitive data.

I agree, but I think thats where the fear printers might store the data comes from. If someone uses a printer at home and think it might still have sensetive data on it, they could just destroy the printer once its lifetime ended. I also doubt home use printers will have hard disks as they have next to no need to store a large amount of data and it would only increase the price per device.

You can always check the vendor's site and see what specs the printer have, my printer only has a cache that clears every poweroff (worse case scenario after 2 printings).

So if 1 print out a password, I can then print out a photo aftewards and the cache is overwritten.

I`m not sure why any other printer has hard disks, it has no sense, you can just store the config of the printer on your OS with the printing software that you got with the printer. No need to put separate harddisk in the printer itself.

Its very insecure architecture then,

Im talking about something like this

---
they will store large amounts data and transfer (or recieve them) over a network connection. Sometimes from several users at once and significantly over 100 pages. A harddisk is just a cheap way to store that data. Due to the nature of harddisks the data is available from a long time after it was needed last (unless overwritten).

So its a network printer, well that is absolutely not good, and not secure.

That is a huge and direct attack vector, and possible exploits could exist, where hackers could grab your printers cache and send it to them via internet.

Nope, dont use that folks.

well none is using somethign like that for papaer wallet, we use something more personal more small, like any small canon printer or epson

as long as it's for personal usage, i don't see the issue with the memory cache

If you use electrum, with seed as a password , which is a passphrase made up of 13 random words.

Then all you need is a pen and paper, or memorize it. It's easy to write down words.

But if the private key is just random characters, then its bad, that needs to be printed out, to avoid misspelling which could cost you your savings.

Decoded

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If you're using bitcoin core, I'd recommend encrypting your wallet.dat file with a password, and encrypting your whole wallet with Veracrypt. It might have flaws, but another layer of security will still slow down any attacker.

I simply use the HW.1 Ledger hardware wallet, it's pretty safe.

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Well, if a user’s account and password got hacked and he/she did not have ‘two factor authentication’, then he/she does not have a strong position to talk to his/her exchange but I think such a user could at least try to do the blockchain analysis

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This is the high risk that bitcoin is facing. Hacking is very serious issue, even there are hackers who are into teaching users how to hack and get into someones account for certain fixed amount. Once a person gets into it he does it continuously which make him master in it. So to get rid of it using offline wallets are better.

Amph

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Quote from: RealBitcoin on February 06, 2016, 01:48:09 PM

Quote from: shorena on February 06, 2016, 01:46:02 PM

Quote from: RealBitcoin on February 06, 2016, 11:00:38 AM

Quote from: shorena on February 05, 2016, 12:39:44 PM

Quote from: RealBitcoin on February 05, 2016, 08:55:57 AM

-snip-
I see, well, dont print out sensitive info with 3rd party printers ever.

There are many shops that offer printing services, but one has to be a fool to print out sentitive data with them.

Only use your own printer (not even your neighbors) to print out sensitive data.

I agree, but I think thats where the fear printers might store the data comes from. If someone uses a printer at home and think it might still have sensetive data on it, they could just destroy the printer once its lifetime ended. I also doubt home use printers will have hard disks as they have next to no need to store a large amount of data and it would only increase the price per device.

You can always check the vendor's site and see what specs the printer have, my printer only has a cache that clears every poweroff (worse case scenario after 2 printings).

So if 1 print out a password, I can then print out a photo aftewards and the cache is overwritten.

I`m not sure why any other printer has hard disks, it has no sense, you can just store the config of the printer on your OS with the printing software that you got with the printer. No need to put separate harddisk in the printer itself.

Its very insecure architecture then,

Im talking about something like this

---
they will store large amounts data and transfer (or recieve them) over a network connection. Sometimes from several users at once and significantly over 100 pages. A harddisk is just a cheap way to store that data. Due to the nature of harddisks the data is available from a long time after it was needed last (unless overwritten).

So its a network printer, well that is absolutely not good, and not secure.

That is a huge and direct attack vector, and possible exploits could exist, where hackers could grab your printers cache and send it to them via internet.

Nope, dont use that folks.

well none is using somethign like that for papaer wallet, we use something more personal more small, like any small canon printer or epson

as long as it's for personal usage, i don't see the issue with the memory cache

john2231

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Hacking is not the good way to have bitcoins you will be in prison if you do that its better to find another skills like making a website seo or service that you can promote a site.. Or join ins signature campaign to earn some bitcoins..

Paracelsus

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Think we have more people's stupidity than hacking special abilities..

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Quote from: shorena on February 06, 2016, 01:46:02 PM

I keep seeing all these posts that someone can hack my wallet. First I did not think that this could be done? If it can be done, how can I prevent it from happening? Does my wallet need to be online in order for them to be able to hack it or can they still hack a paper wallet?

Your wallet can't be hacked, your pc can.
A wallet is totally secured, it would cost billions time more energy to hack it than what there is inside even if you earn thousands of btc.

But your pc can get a trojan installed or a keylogger then someone will access manually to your wallet, but the same way they could (and they will) access your bank accounts in fact.

RealBitcoin

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Quote from: RealBitcoin on February 06, 2016, 11:00:38 AM

Quote from: shorena on February 05, 2016, 12:39:44 PM

Quote from: RealBitcoin on February 05, 2016, 08:55:57 AM

-snip-
I see, well, dont print out sensitive info with 3rd party printers ever.

There are many shops that offer printing services, but one has to be a fool to print out sentitive data with them.

Only use your own printer (not even your neighbors) to print out sensitive data.

I agree, but I think thats where the fear printers might store the data comes from. If someone uses a printer at home and think it might still have sensetive data on it, they could just destroy the printer once its lifetime ended. I also doubt home use printers will have hard disks as they have next to no need to store a large amount of data and it would only increase the price per device.

You can always check the vendor's site and see what specs the printer have, my printer only has a cache that clears every poweroff (worse case scenario after 2 printings).

So if 1 print out a password, I can then print out a photo aftewards and the cache is overwritten.

I`m not sure why any other printer has hard disks, it has no sense, you can just store the config of the printer on your OS with the printing software that you got with the printer. No need to put separate harddisk in the printer itself.

Its very insecure architecture then,

Im talking about something like this

---
they will store large amounts data and transfer (or recieve them) over a network connection. Sometimes from several users at once and significantly over 100 pages. A harddisk is just a cheap way to store that data. Due to the nature of harddisks the data is available from a long time after it was needed last (unless overwritten).

So its a network printer, well that is absolutely not good, and not secure.

That is a huge and direct attack vector, and possible exploits could exist, where hackers could grab your printers cache and send it to them via internet.

Nope, dont use that folks.

shorena

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Quote from: RealBitcoin on February 06, 2016, 11:00:38 AM

Quote from: shorena on February 05, 2016, 12:39:44 PM

Quote from: RealBitcoin on February 05, 2016, 08:55:57 AM

-snip-
I see, well, dont print out sensitive info with 3rd party printers ever.

There are many shops that offer printing services, but one has to be a fool to print out sentitive data with them.

Only use your own printer (not even your neighbors) to print out sensitive data.

I agree, but I think thats where the fear printers might store the data comes from. If someone uses a printer at home and think it might still have sensetive data on it, they could just destroy the printer once its lifetime ended. I also doubt home use printers will have hard disks as they have next to no need to store a large amount of data and it would only increase the price per device.

You can always check the vendor's site and see what specs the printer have, my printer only has a cache that clears every poweroff (worse case scenario after 2 printings).

So if 1 print out a password, I can then print out a photo aftewards and the cache is overwritten.

I`m not sure why any other printer has hard disks, it has no sense, you can just store the config of the printer on your OS with the printing software that you got with the printer. No need to put separate harddisk in the printer itself.

Its very insecure architecture then,

Im talking about something like this

they will store large amounts data and transfer (or recieve them) over a network connection. Sometimes from several users at once and significantly over 100 pages. A harddisk is just a cheap way to store that data. Due to the nature of harddisks the data is available from a long time after it was needed last (unless overwritten).

RealBitcoin

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Quote from: shorena on February 05, 2016, 12:39:44 PM

Quote from: RealBitcoin on February 05, 2016, 08:55:57 AM

-snip-
I see, well, dont print out sensitive info with 3rd party printers ever.

There are many shops that offer printing services, but one has to be a fool to print out sentitive data with them.

Only use your own printer (not even your neighbors) to print out sensitive data.

I agree, but I think thats where the fear printers might store the data comes from. If someone uses a printer at home and think it might still have sensetive data on it, they could just destroy the printer once its lifetime ended. I also doubt home use printers will have hard disks as they have next to no need to store a large amount of data and it would only increase the price per device.

You can always check the vendor's site and see what specs the printer have, my printer only has a cache that clears every poweroff (worse case scenario after 2 printings).

So if 1 print out a password, I can then print out a photo aftewards and the cache is overwritten.

I`m not sure why any other printer has hard disks, it has no sense, you can just store the config of the printer on your OS with the printing software that you got with the printer. No need to put separate harddisk in the printer itself.

Its very insecure architecture then,

Cyaren

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Quote from: RealBitcoin on February 05, 2016, 08:55:57 AM

I keep seeing all these posts that someone can hack my wallet. First I did not think that this could be done? If it can be done, how can I prevent it from happening? Does my wallet need to be online in order for them to be able to hack it or can they still hack a paper wallet?

Anything could be hacked, not just bitcoin wallets. Bitcoin wallets are obviously harder to crack than normal passwords since the length is much longer + the characters are completely random.

If your wallet is online then it'll stand a much higher chance of being hacked, however even offline wallets can be cracked using brute force methods...

arbitrage

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And one day you just enter again your username and pass on web and soon
you realise you can't connect anymore to your account..One small mistake and you won't notice.
Phishing is worst of all i think!

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These days it very difficult to hack and spend bitcoins in this technology.
Accounts gets hacked only if online wallets are preferred. Now most has
a offline wallet like electrum. So the risk of hacking is found to be very
less. Even it has got various authentication features in online wallets
too which won't be that easy for hackers to enter.

shorena

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No I dont escrow anymore.

-snip-
I see, well, dont print out sensitive info with 3rd party printers ever.

There are many shops that offer printing services, but one has to be a fool to print out sentitive data with them.

Only use your own printer (not even your neighbors) to print out sensitive data.

I agree, but I think thats where the fear printers might store the data comes from. If someone uses a printer at home and think it might still have sensetive data on it, they could just destroy the printer once its lifetime ended. I also doubt home use printers will have hard disks as they have next to no need to store a large amount of data and it would only increase the price per device.

RealBitcoin

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Quote from: shorena on February 05, 2016, 05:41:42 AM

Quote from: RealBitcoin on February 05, 2016, 05:03:11 AM

Quote from: notlist3d on February 01, 2016, 01:57:51 PM

The only problem is it has to be done right. Say you use a newer printer and it's compromised.... you could lose it through there. Rare yes but not impossible. The dumber the printer the better, also if you print a wallet might look into how to clear cache on your printer.

Power it off?

I dont know about you guys but I have a normal printer that prints only. Not with wireless crap and other stuff that has attack vector.

I just power off the printer, and the cache clears, because it doesnt have memory card and things like that.
-snip-

This is mainly for commercially used printers. In which case a power off would not help either, because they use a harddisk for long term storage. AFAIK this is not common on end user printers.

I see, well, dont print out sensitive info with 3rd party printers ever.

There are many shops that offer printing services, but one has to be a fool to print out sentitive data with them.

Only use your own printer (not even your neighbors) to print out sensitive data.

shorena

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No I dont escrow anymore.

Quote from: RealBitcoin on February 05, 2016, 05:03:11 AM

Quote from: notlist3d on February 01, 2016, 01:57:51 PM

The only problem is it has to be done right. Say you use a newer printer and it's compromised.... you could lose it through there. Rare yes but not impossible. The dumber the printer the better, also if you print a wallet might look into how to clear cache on your printer.

Power it off?

I dont know about you guys but I have a normal printer that prints only. Not with wireless crap and other stuff that has attack vector.

I just power off the printer, and the cache clears, because it doesnt have memory card and things like that.
-snip-

This is mainly for commercially used printers. In which case a power off would not help either, because they use a harddisk for long term storage. AFAIK this is not common on end user printers.

Nudies Fluffer

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Any computer system online could potentially have exploitable weaknesses that could be used to gain access to one BTC and private keys.
Common sense and a decent understanding of how BTC works is a must when dealing with the storage of coins.

All sorts of ways a would be hacker could gain access to a persons Bitcoin, The trick to avoiding this is to be cautious of downloads and keep all private keys backed up in multiple places offline and have them secured by password.

RealBitcoin

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Quote from: notlist3d on February 01, 2016, 01:57:51 PM

The only problem is it has to be done right. Say you use a newer printer and it's compromised.... you could lose it through there. Rare yes but not impossible. The dumber the printer the better, also if you print a wallet might look into how to clear cache on your printer.

Power it off?

I dont know about you guys but I have a normal printer that prints only. Not with wireless crap and other stuff that has attack vector.

I just power off the printer, and the cache clears, because it doesnt have memory card and things like that.

Quote from: notlist3d on February 01, 2016, 01:57:51 PM

Also storage of that paper wallet is key. Best is stored on a piece of paper in a place such as a bank safty deposit box. Don't upload it to the clouds or anything or you defeat the entire purpose of it.

Wow storing it in a bank, how logical is that.

We all use bitcoin because we dont want to use banks, but theN you say just put the access to the bitcoin wallet into the bank. That makes sense....

BitcoinSupremo

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Even SMS verification won't help when the hacker have the private key of yours. He can open that wallet in any PC without any verification at all.

john2231

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For to prevent to hack your wallet i think you need a two factor authentication or sms verification for every login to make sure that you are the only can open your wallet.. or you may try also cold storage of electrum and make sure you save your seed and password and some important thing like default_wallet.dat save anywhere in your computer that you think its safe..

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What else to use?
Windows 7.

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Quote from: Blawpaw on January 06, 2016, 12:08:32 AM

Always Remember, as long as you have 2FA enabled there will be few little chances of your account being hacked.

I am not that much in BTC , but I am in technology , I am using other sites with 2FA, you can get burned if you try to setup 2FA in an infected machine. The hacker can see that one time key needed for manual entry to disable your 2FA, so I insist that you do the setup of your 2FA in a PC you are 1000% sure it is not infected with anything.

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i think mycelium wallet in android is much safer , secure and untracable than the desktop wallets

notlist3d

legendary

Activity: 1456

Merit: 1000

Quote from: calkob on February 01, 2016, 11:41:42 AM

Quote from: arbitrage on February 01, 2016, 08:38:05 AM

I keep seeing all these posts that someone can hack my wallet. First I did not think that this could be done? If it can be done, how can I prevent it from happening? Does my wallet need to be online in order for them to be able to hack it or can they still hack a paper wallet?

No one can hack a paper wallet, but if you keep your bitcoin at a webite that holds the private keys then yes you could lose the bitcoin. the bitcoin is not yours unless you hold the private keys......

The only problem is it has to be done right. Say you use a newer printer and it's compromised.... you could lose it through there. Rare yes but not impossible. The dumber the printer the better, also if you print a wallet might look into how to clear cache on your printer.

Also storage of that paper wallet is key. Best is stored on a piece of paper in a place such as a bank safty deposit box. Don't upload it to the clouds or anything or you defeat the entire purpose of it.

If your actively going to be using it look into hardware wallets keeping the signing of transactions on them where eve if computer is compromised your coins should be safe.

shorena

copper member

Activity: 1498

Merit: 1562

No I dont escrow anymore.

Can you get malwares and keylogers if you downloading movies via torrents?

Sure, maybe not in a video file, but there might be an executable involved.

Quote from: arbitrage on February 01, 2016, 08:38:05 AM

Will antivirus react on it?

Maybe.

Quote from: arbitrage on February 01, 2016, 08:38:05 AM

Someone have experience with this?

No, I havent pirated something in years. It was however common that pirated material had viruses with the files, esp. for programms or games and cracks or key generators for those. Most viruses are made for Windows, but this is changing as Linux and Mac are more and more common.

KenR

hero member

Activity: 910

Merit: 1000

「きみはこれ&#

Its recommended not to use online wallets like blockchain.info because the website has been DDos's by hackers multiple times.You could never know if your funds are totally safe there.Its very tough for the hacker or say impossible to hack a cold storage.If you use bitcoin core or electrum,secure your funds ,keep the private key safe,maybe paper wallet.There are no chances of hacker getting any access to them.Plus you store the keys away from your computer.

calkob

hero member

Activity: 1106

Merit: 521

Quote from: Paracelsus on January 30, 2016, 09:21:36 AM

I keep seeing all these posts that someone can hack my wallet. First I did not think that this could be done? If it can be done, how can I prevent it from happening? Does my wallet need to be online in order for them to be able to hack it or can they still hack a paper wallet?

No one can hack a paper wallet, but if you keep your bitcoin at a webite that holds the private keys then yes you could lose the bitcoin. the bitcoin is not yours unless you hold the private keys......

RodeoX

legendary

Activity: 3066

Merit: 1147

The revolution will be monetized!

The important difference is that bitcoin is not hacked (I assume you mean cracked).
There will always be creative deviants who figure out a way to get to some wallets. They may trick you into revealing your private keys or place a keylogger that watches and waits for you to enter a password. Or someone could beat you with a hose until you tell them the password. Undecided

Aamir1

hero member

Activity: 756

Merit: 500

Well i don't think it's that much easy to hack someone's wallet, but if it happens then not usually, maybe once in a blue moon you know what i mean.
I never heard someone saying to me that his/her wallet has been hacked, and that proves that it only happens to some people unfortunately.

arbitrage

hero member

Activity: 560

Merit: 500

Can you get malwares and keylogers if you downloading movies via torrents?
Will antivirus react on it?
Someone have experience with this?

Amph

legendary

Activity: 3248

Merit: 1072

Yes those keyloggers are worse than anything and you can get it by clicking on links,
also here on this forum we have lot of scammers training to get your account and rob your coins.. Angry

use zemana for simple keylogger, it hide yourkeystroke, pretty convenient

for keylogger that take screen or stuff like that you need soemthing else, but i think the full version of zemana can handle all of them

Paracelsus

sr. member

Activity: 347

Merit: 250

Activity: 2017

Yes those keyloggers are worse than anything and you can get it by clicking on links,
also here on this forum we have lot of scammers training to get your account and rob your coins.. Angry

sakira

hero member

Activity: 532

Merit: 500

I had been quite safe to use wallet Blockchain.info and add security use Google Authenticator (2FA).
if you always play altcoins trading and download a wallet, be careful there is usually some viruses such as keylogger or other dangerous viruses

nelia57

full member

Activity: 150

Merit: 100

Quote from: Jet Cash on January 06, 2016, 12:16:48 AM

Quote from: FruitsBasket on January 03, 2016, 03:16:48 PM

The most used way by hackers is that they install a keylogger on your computer through software that you have downloaded somewhere. If you login to your wallet, all the keys u clicked will be sent to them, also your password and wallet information. So they login and steal your coins, as easy as that.
Another way would be brute force, to prevent this from happening, you need a strong password with much charachters and special numbers/symbols and uppercase and lowercase. To prevent keylogging, do not download anything fishy or from a non reliable source!

Don't forget that Microsoft has installed a keylogger in Windows 10.

Wow i don't know that microsoft has installed keylogger in windows 10. Actually it's easy to prevent hacker, don't download something that suspicious and download anti malware and spyware.

that's scary, I bought a new laptop with Windows 10, made my first few paper wallets there Sad

RealBitcoin

hero member

Activity: 854

Merit: 1009

JAYCE DESIGNS - http://bit.ly/1tmgIwK

Quote from: Slark on January 29, 2016, 06:19:18 PM

As far as I know Microsoft added telemetry spying functionality to their older systems: Vista, 7, 8 via Microsoft Updates are not safe anymore.
Currently probably only Windows XP is free from spying eyes of Microsoft but that is because this system is ancient.
But then again, stop worrying about Microsoft, they are not gonna steal your money. Be sure to not install unknown software or visit strange sites instead.

I`m not so sure about that, if it's in the shadows, and bitcoin gets big, they can easily steal money, and blame it on hackers. Or one of their rogue employees starts stealing.

Or even if they not, any hacker can just hijack their keylogger systems and steal that way, either way it stinks badly.

Slark

legendary

Activity: 1862

Merit: 1004

Quote from: BTcoint on January 29, 2016, 02:46:52 PM

Quote from: Snorek on January 29, 2016, 02:27:22 PM

Quote from: Jet Cash on January 06, 2016, 12:16:48 AM

Quote from: FruitsBasket on January 03, 2016, 03:16:48 PM

The most used way by hackers is that they install a keylogger on your computer through software that you have downloaded somewhere. If you login to your wallet, all the keys u clicked will be sent to them, also your password and wallet information. So they login and steal your coins, as easy as that.
Another way would be brute force, to prevent this from happening, you need a strong password with much charachters and special numbers/symbols and uppercase and lowercase. To prevent keylogging, do not download anything fishy or from a non reliable source!

Don't forget that Microsoft has installed a keylogger in Windows 10.

Wow i don't know that microsoft has installed keylogger in windows 10. Actually it's easy to prevent hacker, don't download something that suspicious and download anti malware and spyware.

Yes, that is true. Microsoft is gathering telemetry data and know everything you do on your Windows 10. Win 10 has keylogger build in by default, you can however try to disable it by using various 'no spy addons'.
But if you own bitcoin I would not be worried about Microsoft, they won't steal your bitcoins, they just like to spy on you.

so that means Linux and android operating systems are safer than microsoft products
e.g . Microsoft windows 10
thank

As far as I know Microsoft added telemetry spying functionality to their older systems: Vista, 7, 8 via Microsoft Updates are not safe anymore.
Currently probably only Windows XP is free from spying eyes of Microsoft but that is because this system is ancient.
But then again, stop worrying about Microsoft, they are not gonna steal your money. Be sure to not install unknown software or visit strange sites instead.

BTcoint

hero member

Activity: 553

Merit: 500

Quote from: Snorek on January 29, 2016, 02:27:22 PM

Quote from: Jet Cash on January 06, 2016, 12:16:48 AM

Quote from: FruitsBasket on January 03, 2016, 03:16:48 PM

The most used way by hackers is that they install a keylogger on your computer through software that you have downloaded somewhere. If you login to your wallet, all the keys u clicked will be sent to them, also your password and wallet information. So they login and steal your coins, as easy as that.
Another way would be brute force, to prevent this from happening, you need a strong password with much charachters and special numbers/symbols and uppercase and lowercase. To prevent keylogging, do not download anything fishy or from a non reliable source!

Don't forget that Microsoft has installed a keylogger in Windows 10.

Wow i don't know that microsoft has installed keylogger in windows 10. Actually it's easy to prevent hacker, don't download something that suspicious and download anti malware and spyware.

Yes, that is true. Microsoft is gathering telemetry data and know everything you do on your Windows 10. Win 10 has keylogger build in by default, you can however try to disable it by using various 'no spy addons'.
But if you own bitcoin I would not be worried about Microsoft, they won't steal your bitcoins, they just like to spy on you.

so that means Linux and android operating systems are safer than microsoft products
e.g . Microsoft windows 10
thank

Snorek

legendary

Activity: 1400

Merit: 1001

Quote from: Jet Cash on January 06, 2016, 12:16:48 AM

Quote from: FruitsBasket on January 03, 2016, 03:16:48 PM

The most used way by hackers is that they install a keylogger on your computer through software that you have downloaded somewhere. If you login to your wallet, all the keys u clicked will be sent to them, also your password and wallet information. So they login and steal your coins, as easy as that.
Another way would be brute force, to prevent this from happening, you need a strong password with much charachters and special numbers/symbols and uppercase and lowercase. To prevent keylogging, do not download anything fishy or from a non reliable source!

Don't forget that Microsoft has installed a keylogger in Windows 10.

Wow i don't know that microsoft has installed keylogger in windows 10. Actually it's easy to prevent hacker, don't download something that suspicious and download anti malware and spyware.

Yes, that is true. Microsoft is gathering telemetry data and know everything you do on your Windows 10. Win 10 has keylogger build in by default, you can however try to disable it by using various 'no spy addons'.
But if you own bitcoin I would not be worried about Microsoft, they won't steal your bitcoins, they just like to spy on you.

Kyrish

newbie

Activity: 16

Merit: 0

Hello, xmax! There are really some ways of hacking into your wallet... One of the most widely spread methods is using some keylogger software. There are several free tools available now like the one from Spyrix. You should be aware of such things because they log all the keystrokes and passwords when installed. I've used some keyloggers for monitoring purposes, so I know how they work

Just be sure that there is no any suspicious software on your PC and install a good anti-virus

RealBitcoin

hero member

Activity: 854

Merit: 1009

JAYCE DESIGNS - http://bit.ly/1tmgIwK

Quote from: qWark on January 07, 2016, 08:15:36 AM

It could be brute forced, but the amount of time it would take to crack it would be ridicules.

I doubt anyone would try unless it was for thousands of bitcoins.

Yes, and the probability that you find it before that is also slim.

Because probably the private key will be in the latter half of the number range, because nobody will put a small number for it like 92532

qWark

full member

Activity: 196

Merit: 100

It could be brute forced, but the amount of time it would take to crack it would be ridicules.

I doubt anyone would try unless it was for thousands of bitcoins.

shorena

copper member

Activity: 1498

Merit: 1562

No I dont escrow anymore.

Quote from: knightkon on January 06, 2016, 08:38:57 PM

Quote from: shorena on January 03, 2016, 04:00:41 AM

Quote from: PartsSlinger on January 06, 2016, 10:52:10 AM

I keep seeing all these posts that someone can hack my wallet. First I did not think that this could be done? If it can be done, how can I prevent it from happening? Does my wallet need to be online in order for them to be able to hack it or can they still hack a paper wallet?

It is possible that someone can just guess or brute force your private key. The chance however is so small you might as well call it impossible. Its as likely as someone winning the lottery several times in a row and will for all we know never happen as long as the sun is still burning.

Other than that it mostly depends on the way you use your machine. As AllInCrypto said if the machine that you use to control your wallet is infected by malware, its easy for the attacker to spend your coins. Its however not "easy" to infect a modern, well updated system, unless you do something to help the malware. Commonly bitcoin related malware will require you to execute it yourself, so be careful what you download and use.

Just reading through and have to question how someone could brute force your private key? I of coarse do not understand what the private key is nor do I understand what brute force means, but the thread interested me.

A private key is just a number. So lets assume the possible numbers for a private key are between 1 and 4. I dont know your private key, but I just test all 4. Thats a brute force attack. I just try all possible combinations and see if I hit the jackpot. Of course with bitcoin the number is significantly bigger. There are 2²⁵⁶ = 115792089237316195423570985008687907853269984665640564039457584007913129639936 possible private keys. Roughly one for every 1000 atoms in the known universe[1]. This makes guessing your private key possible with infinite time and resources. We dont have infinite time and resources though, so we can consider it impossible.

[1] http://www.wolframalpha.com/input/?i=2%5E256

Amph

legendary

Activity: 3248

Merit: 1072

Quote from: Amph on January 06, 2016, 10:46:34 AM

Quote from: PartsSlinger on January 06, 2016, 09:20:37 AM

Quote from: PartsSlinger on January 06, 2016, 12:31:52 AM

Quote from: Jet Cash on January 06, 2016, 12:16:48 AM

Quote from: FruitsBasket on January 03, 2016, 03:16:48 PM

The most used way by hackers is that they install a keylogger on your computer through software that you have downloaded somewhere. If you login to your wallet, all the keys u clicked will be sent to them, also your password and wallet information. So they login and steal your coins, as easy as that.
Another way would be brute force, to prevent this from happening, you need a strong password with much charachters and special numbers/symbols and uppercase and lowercase. To prevent keylogging, do not download anything fishy or from a non reliable source!

Don't forget that Microsoft has installed a keylogger in Windows 10.

Wow I'm glad I didn't install 10. Is there at least an option to turn it off?

yes there are soem guide, on how to turn off cortina and everything in the privacy windows

but i doubt win 10 will ever steal your private key, it's as good as the best fud out there about the value of bitcoin...

I don't think win 10 would try and steal my keys, but at the same time if you have a factory installed keylogger wouldn't that make it easier for a potential hacker to find your information once he is inside your system?

you mena someone malicious from microsoft employees? because another hacker if he install his keylogger it certainly won't benefit to much by the fact that windows 10 has already one...

Fair point, but even in your scenario it still doesn't make me want to have a factory installed keylogger. I can promise you not everyone at microsoft is a saint and people get ripped off all the time by malicious employees.

yeah that's true, i would only store a small amount on windows 10 as it is right now, until they can sort this mess at 100%

better to avoid it and use linux/win 7 for the time being

knightkon

hero member

Activity: 588

Merit: 500

Quote from: shorena on January 03, 2016, 04:00:41 AM

Quote from: PartsSlinger on January 06, 2016, 10:52:10 AM

I keep seeing all these posts that someone can hack my wallet. First I did not think that this could be done? If it can be done, how can I prevent it from happening? Does my wallet need to be online in order for them to be able to hack it or can they still hack a paper wallet?

It is possible that someone can just guess or brute force your private key. The chance however is so small you might as well call it impossible. Its as likely as someone winning the lottery several times in a row and will for all we know never happen as long as the sun is still burning.

Other than that it mostly depends on the way you use your machine. As AllInCrypto said if the machine that you use to control your wallet is infected by malware, its easy for the attacker to spend your coins. Its however not "easy" to infect a modern, well updated system, unless you do something to help the malware. Commonly bitcoin related malware will require you to execute it yourself, so be careful what you download and use.

Just reading through and have to question how someone could brute force your private key? I of coarse do not understand what the private key is nor do I understand what brute force means, but the thread interested me.

RealBitcoin

hero member

Activity: 854

Merit: 1009

JAYCE DESIGNS - http://bit.ly/1tmgIwK

Quote from: Amph on January 06, 2016, 10:46:34 AM

Quote from: PartsSlinger on January 06, 2016, 09:20:37 AM

Quote from: PartsSlinger on January 06, 2016, 12:31:52 AM

Quote from: Jet Cash on January 06, 2016, 12:16:48 AM

Quote from: FruitsBasket on January 03, 2016, 03:16:48 PM

The most used way by hackers is that they install a keylogger on your computer through software that you have downloaded somewhere. If you login to your wallet, all the keys u clicked will be sent to them, also your password and wallet information. So they login and steal your coins, as easy as that.
Another way would be brute force, to prevent this from happening, you need a strong password with much charachters and special numbers/symbols and uppercase and lowercase. To prevent keylogging, do not download anything fishy or from a non reliable source!

Don't forget that Microsoft has installed a keylogger in Windows 10.

Wow I'm glad I didn't install 10. Is there at least an option to turn it off?

yes there are soem guide, on how to turn off cortina and everything in the privacy windows

but i doubt win 10 will ever steal your private key, it's as good as the best fud out there about the value of bitcoin...

I don't think win 10 would try and steal my keys, but at the same time if you have a factory installed keylogger wouldn't that make it easier for a potential hacker to find your information once he is inside your system?

you mena someone malicious from microsoft employees? because another hacker if he install his keylogger it certainly won't benefit to much by the fact that windows 10 has already one...

Fair point, but even in your scenario it still doesn't make me want to have a factory installed keylogger. I can promise you not everyone at microsoft is a saint and people get ripped off all the time by malicious employees.

Haha you mean those microsoft call center scams from India.

Haha those guys might be real microsoft employees, but they are just part-time scammers trying to earn an extra buck Cheesy

PartsSlinger

newbie

Activity: 42

Merit: 0

Quote from: Amph on January 06, 2016, 10:46:34 AM

Quote from: PartsSlinger on January 06, 2016, 09:20:37 AM

Quote from: PartsSlinger on January 06, 2016, 12:31:52 AM

Quote from: Jet Cash on January 06, 2016, 12:16:48 AM

Quote from: FruitsBasket on January 03, 2016, 03:16:48 PM

The most used way by hackers is that they install a keylogger on your computer through software that you have downloaded somewhere. If you login to your wallet, all the keys u clicked will be sent to them, also your password and wallet information. So they login and steal your coins, as easy as that.
Another way would be brute force, to prevent this from happening, you need a strong password with much charachters and special numbers/symbols and uppercase and lowercase. To prevent keylogging, do not download anything fishy or from a non reliable source!

Don't forget that Microsoft has installed a keylogger in Windows 10.

Wow I'm glad I didn't install 10. Is there at least an option to turn it off?

yes there are soem guide, on how to turn off cortina and everything in the privacy windows

but i doubt win 10 will ever steal your private key, it's as good as the best fud out there about the value of bitcoin...

I don't think win 10 would try and steal my keys, but at the same time if you have a factory installed keylogger wouldn't that make it easier for a potential hacker to find your information once he is inside your system?

you mena someone malicious from microsoft employees? because another hacker if he install his keylogger it certainly won't benefit to much by the fact that windows 10 has already one...

Fair point, but even in your scenario it still doesn't make me want to have a factory installed keylogger. I can promise you not everyone at microsoft is a saint and people get ripped off all the time by malicious employees.

Amph

legendary

Activity: 3248

Merit: 1072

Quote from: PartsSlinger on January 06, 2016, 09:20:37 AM

Quote from: PartsSlinger on January 06, 2016, 12:31:52 AM

Quote from: Jet Cash on January 06, 2016, 12:16:48 AM

Quote from: FruitsBasket on January 03, 2016, 03:16:48 PM

The most used way by hackers is that they install a keylogger on your computer through software that you have downloaded somewhere. If you login to your wallet, all the keys u clicked will be sent to them, also your password and wallet information. So they login and steal your coins, as easy as that.
Another way would be brute force, to prevent this from happening, you need a strong password with much charachters and special numbers/symbols and uppercase and lowercase. To prevent keylogging, do not download anything fishy or from a non reliable source!

Don't forget that Microsoft has installed a keylogger in Windows 10.

Wow I'm glad I didn't install 10. Is there at least an option to turn it off?

yes there are soem guide, on how to turn off cortina and everything in the privacy windows

but i doubt win 10 will ever steal your private key, it's as good as the best fud out there about the value of bitcoin...

I don't think win 10 would try and steal my keys, but at the same time if you have a factory installed keylogger wouldn't that make it easier for a potential hacker to find your information once he is inside your system?

you mean someone malicious from microsoft employees? because another hacker if he install his keylogger it certainly won't benefit too much by the fact that windows 10 has already one...

PartsSlinger

newbie

Activity: 42

Merit: 0

Quote from: PartsSlinger on January 06, 2016, 12:31:52 AM

Quote from: Jet Cash on January 06, 2016, 12:16:48 AM

Quote from: FruitsBasket on January 03, 2016, 03:16:48 PM

The most used way by hackers is that they install a keylogger on your computer through software that you have downloaded somewhere. If you login to your wallet, all the keys u clicked will be sent to them, also your password and wallet information. So they login and steal your coins, as easy as that.
Another way would be brute force, to prevent this from happening, you need a strong password with much charachters and special numbers/symbols and uppercase and lowercase. To prevent keylogging, do not download anything fishy or from a non reliable source!

Don't forget that Microsoft has installed a keylogger in Windows 10.

Wow I'm glad I didn't install 10. Is there at least an option to turn it off?

yes there are soem guide, on how to turn off cortina and everything in the privacy windows

but i doubt win 10 will ever steal your private key, it's as good as the best fud out there about the value of bitcoin...

I don't think win 10 would try and steal my keys, but at the same time if you have a factory installed keylogger wouldn't that make it easier for a potential hacker to find your information once he is inside your system?

relq

sr. member

Activity: 420

Merit: 250

Quote from: Jet Cash on January 06, 2016, 12:16:48 AM

Quote from: FruitsBasket on January 03, 2016, 03:16:48 PM

The most used way by hackers is that they install a keylogger on your computer through software that you have downloaded somewhere. If you login to your wallet, all the keys u clicked will be sent to them, also your password and wallet information. So they login and steal your coins, as easy as that.
Another way would be brute force, to prevent this from happening, you need a strong password with much charachters and special numbers/symbols and uppercase and lowercase. To prevent keylogging, do not download anything fishy or from a non reliable source!

Don't forget that Microsoft has installed a keylogger in Windows 10.

Wow i don't know that microsoft has installed keylogger in windows 10. Actually it's easy to prevent hacker, don't download something that suspicious and download anti malware and spyware.

adibe

sr. member

Activity: 406

Merit: 250

Quote from: PartsSlinger on January 06, 2016, 12:31:52 AM

I keep seeing all these posts that someone can hack my wallet. First I did not think that this could be done? If it can be done, how can I prevent it from happening? Does my wallet need to be online in order for them to be able to hack it or can they still hack a paper wallet?

I think it's not about hack, but it must be their relative that hack his/her wallet. i think it's hard to hack someone wallet on online wallet. for prevent this maybe you should make your password hard and only you that know your password.

Amph

legendary

Activity: 3248

Merit: 1072

Quote from: Jet Cash on January 06, 2016, 12:16:48 AM

Quote from: FruitsBasket on January 03, 2016, 03:16:48 PM

The most used way by hackers is that they install a keylogger on your computer through software that you have downloaded somewhere. If you login to your wallet, all the keys u clicked will be sent to them, also your password and wallet information. So they login and steal your coins, as easy as that.
Another way would be brute force, to prevent this from happening, you need a strong password with much charachters and special numbers/symbols and uppercase and lowercase. To prevent keylogging, do not download anything fishy or from a non reliable source!

Don't forget that Microsoft has installed a keylogger in Windows 10.

Wow I'm glad I didn't install 10. Is there at least an option to turn it off?

yes there are some guide, on how to turn off cortina and everything in the privacy windows

but i doubt win 10 will ever steal your private key, it's as good as the best fud out there about the value of bitcoin...

PartsSlinger

newbie

Activity: 42

Merit: 0

Quote from: Jet Cash on January 06, 2016, 12:16:48 AM

Quote from: FruitsBasket on January 03, 2016, 03:16:48 PM

The most used way by hackers is that they install a keylogger on your computer through software that you have downloaded somewhere. If you login to your wallet, all the keys u clicked will be sent to them, also your password and wallet information. So they login and steal your coins, as easy as that.
Another way would be brute force, to prevent this from happening, you need a strong password with much charachters and special numbers/symbols and uppercase and lowercase. To prevent keylogging, do not download anything fishy or from a non reliable source!

Don't forget that Microsoft has installed a keylogger in Windows 10.

Wow I'm glad I didn't install 10. Is there at least an option to turn it off?

Jet Cash

legendary

Activity: 2828

Merit: 2472

https://JetCash.com

Quote from: FruitsBasket on January 03, 2016, 03:16:48 PM

The most used way by hackers is that they install a keylogger on your computer through software that you have downloaded somewhere. If you login to your wallet, all the keys u clicked will be sent to them, also your password and wallet information. So they login and steal your coins, as easy as that.
Another way would be brute force, to prevent this from happening, you need a strong password with much charachters and special numbers/symbols and uppercase and lowercase. To prevent keylogging, do not download anything fishy or from a non reliable source!

Don't forget that Microsoft has installed a keylogger in Windows 10.

BTCBinary

hero member

Activity: 504

Merit: 500

Yes your wallet can and will be hacked if you do not take the needed measures. If you are using a web wallet be sure to activate you 2FA security option and always be sure to have a very very strong password for your accounts. if you have a Desktop wallet be careful, don't hold many bitcoin in there.

As for a paper wallet if you follow all the right procedure it is nearly impossible to hack

Blawpaw

legendary

Activity: 1596

Merit: 1027

Always Remember, as long as you have 2FA enabled there will be few little chances of your account being hacked.

RealBitcoin

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Activity: 854

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JAYCE DESIGNS - http://bit.ly/1tmgIwK

Quote from: tyz on January 03, 2016, 09:46:26 AM

I keep seeing all these posts that someone can hack my wallet. First I did not think that this could be done? If it can be done, how can I prevent it from happening? Does my wallet need to be online in order for them to be able to hack it or can they still hack a paper wallet?

If you have an easy to guess private key, then anybody can hack it from anywhere.

If you have a virused online PC where you keep your wallet, or you have an online web wallet then its also vulnerable.

FruitsBasket

legendary

Activity: 1232

Merit: 1017

The most used way by hackers is that they install a keylogger on your computer through software that you have downloaded somewhere. If you login to your wallet, all the keys u clicked will be sent to them, also your password and wallet information. So they login and steal your coins, as easy as that.
Another way would be brute force, to prevent this from happening, you need a strong password with much charachters and special numbers/symbols and uppercase and lowercase. To prevent keylogging, do not download anything fishy or from a non reliable source!

notlist3d

legendary

Activity: 1456

Merit: 1000

If it is coins you need access to and are actively using I suggest hardware wallet. They keep the private key off of computer and sign the transaction on the device. So it is very secure. If used properly even if infected you are still safe with a good hardware wallet.

Other option is if you are not going to touch them at all look into paper wallet. You can monitor the address online and send it, just keep private key on paper only. Again it is if done properly, if not your insecure.

Those are best two options I think.

Amph

legendary

Activity: 3248

Merit: 1072

it's not hack, it's stealing let don't get confused here

bitcoin can not be directly hacked in the sense that the hacker can not steal you funds by brute forcing your public key

but he can steal those if you have an infected machine with a rootkit or whatever

zodiac3011

hero member

Activity: 770

Merit: 500

The is way you should use a second PC in order to do your crypto stuff. This computer should never go to the internet. So, you can make sure that are save from keylogger, viruses and other hacking software.

Quote from: zodiac3011 on January 03, 2016, 08:49:53 AM

well... with keylogger they can turn your life to very miserable I have to say because everything you do will be recorded, typing password to unlock wallet, generating wallet paper. The only way to prevent it is scanning your pc often and do not download potential virus software. By doing, you can be considered safe I think

so it works like a cold storage right? I think we just need a virtual machine or maybe dual boot with an clean OS (nothing got installed at all) and everything will be alright but extra precautions are advised so you might want to use a second PC like tyz said Grin

NorrisK

legendary

Activity: 1946

Merit: 1007

It is next to impossible that someone cracks your bitcoin wallet through brute forcing your private key. The number of keys is so astronomically big, that you are better of buying a lottery ticket.

Hacking is a whole different thing, and mostly relies on stupidity of the users. If you install dubious software or give away sensitive information, you may get hacked.

tyz

legendary

Activity: 3360

Merit: 1533

The is way you should use a second PC in order to do your crypto stuff. This computer should never go to the internet. So, you can make sure that are save from keylogger, viruses and other hacking software.

Quote from: zodiac3011 on January 03, 2016, 08:49:53 AM

well... with keylogger they can turn your life to very miserable I have to say because everything you do will be recorded, typing password to unlock wallet, generating wallet paper. The only way to prevent it is scanning your pc often and do not download potential virus software. By doing, you can be considered safe I think

zodiac3011

hero member

Activity: 770

Merit: 500

well... with keylogger they can turn your life to very miserable I have to say because everything you do will be recorded, typing password to unlock wallet, generating wallet paper. The only way to prevent it is scanning your pc often and do not download potential virus software. By doing, you can be considered safe I think

helloeverybody

legendary

Activity: 1008

Merit: 1000

★YoBit.Net★ 350+ Coins Exchange & Dice

Bottom line is if you have a lot of bitcoin that you dont need instant access to then stick it on a paper wallet, if you need to use that bitcoin a lot then considor a hardware wallet, if its just a small amount then just store it on your phone or pc but be carefull with what you download. As far as i know most people arent targeted for specific bitcoin stealing programs unless the attacker knows that you use bitcoin but if you were infected by a trojan then someone would soon find you are using bitcoin.

tyz

legendary

Activity: 3360

Merit: 1533

Those hacking method are mostly brute force. You usually encrypt your wallet with a password. If your password is short (less than 8 characters ) it could be cracked by brute force methods. It needs a while, and the hacker needs a computer with lot of power, but it is possible. Especially, if the hackers knows the length and some chars of the password.
To get sure, choose a password of at least 12 characters including letters, numbers and special characters.

b-trading

sr. member

Activity: 434

Merit: 250

I keep seeing all these posts that someone can hack my wallet. First I did not think that this could be done? If it can be done, how can I prevent it from happening? Does my wallet need to be online in order for them to be able to hack it or can they still hack a paper wallet?

for about 4 years since i know about bitcoin i never have my own wallet running on my pc i usually using bitcoin wallet address from an exchange or an online wallet like coinbase, after i read much information from here in this forum i have consider to install bitcoin wallet on my pc and running it as my own private wallet and i also using paper wallet that i use it for saving in bitcoin and will never redeem it untill 5 years from now, and my opinion is that wallet on our pc and paper wallet is the safest place to store our bitcoin on there rather than any other kind of wallet

shorena

copper member

Activity: 1498

Merit: 1562

No I dont escrow anymore.

I keep seeing all these posts that someone can hack my wallet. First I did not think that this could be done? If it can be done, how can I prevent it from happening? Does my wallet need to be online in order for them to be able to hack it or can they still hack a paper wallet?

It is possible that someone can just guess or brute force your private key. The chance however is so small you might as well call it impossible. Its as likely as someone winning the lottery several times in a row and will for all we know never happen as long as the sun is still burning.

Other than that it mostly depends on the way you use your machine. As AllInCrypto said if the machine that you use to control your wallet is infected by malware, its easy for the attacker to spend your coins. Its however not "easy" to infect a modern, well updated system, unless you do something to help the malware. Commonly bitcoin related malware will require you to execute it yourself, so be careful what you download and use.

AllInCrypto

sr. member

Activity: 246

Merit: 250