Topic: Hot/Cold wallet - page 2. (Read 322 times)

Cold must be cold forever.
Air gap must be air gap forever.

If you turn cold to hot, air gap to online exposed, these wallets are no longer cold wallets or air gap wallets.

The practice you need to do is move your bitcoin from a cold or an air gap wallet, with part of your fund in the wallet, to a new wallet as a hot wallet for spending and bring it around. With a hot wallet, you are afford to connect it to Internet and surely you afford to lose your bitcoin in a hot wallet in worst situation.

It keeps your private key offline, you sign a transaction offline, and broadcast it on another device, that is online.
https://electrum.readthedocs.io/en/latest/coldstorage.html#get-your-transaction-signed

You did misunderstood the concept.


Secure your wallet
Security checklist

Yes you are right it is not good idea to switch between hot and cold wallets because it can be dangerous. Hot wallets are meant to be online while cold wallets are meant to be offline. Switching between them can put your money and assets at risk. Best way to keep your assets safe is to use special kind of wallet called hardware wallet. This is safest option. While Electrum has feature that can make your wallet seem offline it is not best way to keep your assets safe. Hardware wallets like Ledger or Trezor are best choice because they are made to keep your assets safe.

I don't think it's a good idea to switch a cold wallet into a hot wallet or a hot wallet to a cold wallet. Like others said hot wallets are supposed to be always connected online and cold wallets should always be disconnected online.
You can do that with Electrum by enabling the proxy settings and setting it to local IP it would turn to offline but it's not a wise way to protect your wallet since you have multiple assets and you want all assets to be in a safe wallet then you don't have other choice but to use a hardware wallet that is the best option I could suggest because you have multiple assets that you want to protect based on your statement from the OP.

With all of the explanations about cold and hot wallets, I guess that there's no more need to have some additional words to say. But with this, how did you figure out that they've failed for a specific attempt three times? What wallet do you use? I guess that you're using an exchange wallet and there's an email notification from them that has alerted you three times.

These are the known wallets in the community but many discourages others to use Ledger because of their ugly recover feature.

Nothing  like switch  :)but I get you
The best option for this is setting up a Watch only wallet for your wallet if its a non custodial wallet (I.e you have your seed phrases),opensourced is another option,you can read up about that but it's worth knowing...
With watch only wallet you can setup a cold storage for your coin, you will be having same wallet on two device , the  one that connects to Internet and the one that has never connected to Internet or Airgapped devices, the one that connects to the Internet will have a will display your coin but you won't be able to broadcast your transaction without signing it from the one that doesn't connects to the Internet ( so you have a better way to secure your coin using the cold storage format) with such setup.
Although I don't know the wallet you're using but

Here are quick guides to use watch only wallet incase you're interested
https://electrum.readthedocs.io/en/latest/coldstorage.html ~ Electrum
https://bluewallet.io/watch-only/ ~ blue wallet [all you have to do is import through scan and you will have your watch only wallet ]
https://bluewallet.io/docs/sign-offline/ ~ [sign transaction blue wallet ]
https://support.airgap.it/guides/sparrow/ ~ sparrow

I don't know how this happened but if you have an exchange wallet and  it's "signed in"  on multiple device, if one of the  device get tampered with there could be an attempt but if they don't know the pass key they won't be able to perform the transaction (provided you linked email account is not also signed in on such device)
 No you can't stop people from sending you if they have your address

First, you have to understand the concept of hot & cold wallets, basically hot wallets are wallets that are connected to the internet, and cold wallets have the opposite characteristic, they are not connected to the internet. An example of a hot wallet is software that you use to store your crypto, such as Trustwallet, Electrum or Metamask. And examples of cold wallets are hardware wallets such as Trezor & Ledger.

Hamza2424's thread ^[1] can help you to know them more deeply & also their approach. Changing wallets from cold to hot, PrivacyG has said above.

[1] https://bitcointalksearch.org/topic/crypto-wallets-cold-and-hot-wallets-and-their-approach-5413117

If you're using a hot wallet, then they are best known for being an online crypto wallet and they don't have the access of granting you the private keys to the wallet in use, instead they are often referred to under the category of custodial wallets, a good example is a mobile wallet, exchange wallet etc.

But as for the other category, which is a cold storage, this allows you to have access and control the wallet provides keys because they are with you and they are often referred to as non-custodial wallet, a good example is a hardware wallet, irrespective of the kind of wallet you're using, your bitcoin or crypto isn't stored on the wallet, but on the blockchain, wallet only provides us with the unblocking keys that gives us access to our coins on the blockchain.

Have most of your coins on cold wallet. Have little amount of your coins on hot wallet which you can use for spendings which are often and for emergency purposes.  Despite this, protect your hot wallet.

How were you able to know?

I do not understand what you say happened honestly.  But speaking on Hot and Cold Wallets,

Switching in between Hot and Cold would be useless.  Cold Wallets are supposed to be 100 percent Secure against external threats.  You create an Airgapped Wallet instead of Electrum because the Airgapped Wallet has no Internet connection to work with, so there is no way an external bad actor could penetrate it over the Internet and create damages.  You use Electrum for comfort.  Hot Wallets are Wallets that are easy to lose, much easier to be penetrated and require so much more care.

Example.  You get an used Laptop and turn it into a Cold Wallet.  The Laptop has a virus that automatically sends all your Bitcoin to the Address of a stranger as soon as it passes a specific Balance.  Got 0.01 Bitcoin in your Wallet?  The Virus can target you.  Well, if there is no Internet connection, it can try a million times.  Nothing would happen because it is isolated from the rest of the World.  Your Bitcoin is therefore Safe.

If you have a Cold Wallet and plug in your Internet cable or connect it through WiFi, this is not a Cold Wallet any more.  You turned it into a Hot Wallet and now many attack vectors are possible.

Hot wallets are wallet that are always used online and it is good that you use an open source wallet like Electrum wallet or bluewallet because they are noncustodial wallets where only you have the private keys.

Cold wallets are those wallet that are never connected to the internet like hard wallets and electrum cold storage wallet where the keys are generated on an airgapped device. Large funds are best stored in cold wallets and small amount of funds for daily transactions are best stored on hot wallets.

If I may ask which wallet are you using to keep your coins and the 0.25 sent to you is a dust attack. It is better that you don't spend it along side with your bitcoin but it can be feezed if you are using a wallet like Electrum.

Is there a wallet out yet that lets you switch between hot and cold? Like turn it on and off? Or am I completely misunderstanding this concept? Someone tried to take a dollar out of my wallet, they failed. Tried three times actually. This has never happened before but now I am thinking more about security. I am an active trader so I have never really looked at cold wallets but I do have some assets I have held for years so they might as well be in a cold wallet. Also they sent me .25 before trying to take money, can you stop people from sending you things? It seems impossible but in my 8 years of crypto trading, this has never happened before.