You can never be careful enough. It's good to have updated anti-virus on your computer or mobile and double check everything. It's very convenient to copy paste addresses but sometimes that isn't the smartest thing to do. Unfortunately new malwares are threatening every day and bitcoins are not safe from them either.
Anti-virus softwares can be easily by-passed by crypters.Read my above post.Only way to avoid the threats is to be aware of everything taking place in your presence in front of the screen. 
Topic: New Bitcoin virus - page 2. (Read 3433 times)
You can never be careful enough. It's good to have updated anti-virus on your computer or mobile and double check everything. It's very convenient to copy paste addresses but sometimes that isn't the smartest thing to do. Unfortunately new malwares are threatening every day and bitcoins are not safe from them either.
This is as old as bitcoin unfortunately, there used to be dorks on HF talking about this stuff all the time. There are people who pay top dollar for this kind of coding, and unfortunately it isn't that difficult to experienced programmers. You need to be careful and verify the address every single time or you will get caught off guard by something like this. Honestly your best bet is a fresh install of your OS and practicing better security 
This and other things is the reason why I always double check the Bitcoin address whenever I do some transactions in my Bitcoin wallet. We never know what virus can already be lodging in our devices and they are just waiting for the proper time to attack, leaving us with disappointment and loss of money.
I have heard of this happening.
Maybe copy & pasting your bitcoin address is not so safe especially if you don't have somekind of security on your pc or mobile so the virus can get on it.
My suggestion would be to use those QR codes instead. You just scan the code with your webcam or your camera on your phone and you know that you are safe from this kind of thing from happening when you are copying your bitcoin address like this.
Maybe copy & pasting your bitcoin address is not so safe especially if you don't have somekind of security on your pc or mobile so the virus can get on it.
My suggestion would be to use those QR codes instead. You just scan the code with your webcam or your camera on your phone and you know that you are safe from this kind of thing from happening when you are copying your bitcoin address like this.
This virus is free on the black market. I think that's why it's very common to see it appear inside a file. Be careful before downloading any file. Using a good antivirus is not enough, the virus can be undetectable.
This is a very common virus and it's possible many have already fallen for it. The hacker swaps out your bitcoin address with his.
If you're using a browser to do this, wipe cache and delete extensions to see if that was the problem. If the problem still exists, then you'll have to run a malware scan like malwarebytes, and if then it still persists, you may have to do a factory reset.
If you're using a browser to do this, wipe cache and delete extensions to see if that was the problem. If the problem still exists, then you'll have to run a malware scan like malwarebytes, and if then it still persists, you may have to do a factory reset.
When ever I try to copy a bitcoin address , it automatically changes to a similar one but different
This is not actually new virus because its being reported and tracked already regarding on this virus which is usually been downloaded and run silently on your computer on which anytime you copy and paste a wallet address it shows different address which have been posted by jacee above. If thats the address that you are mentioning then its really a virus.
This is as old as bitcoin unfortunately, there used to be dorks on HF talking about this stuff all the time. There are people who pay top dollar for this kind of coding, and unfortunately it isn't that difficult to experienced programmers. You need to be careful and verify the address every single time or you will get caught off guard by something like this.
Honestly your best bet is a fresh install of your OS and practicing better security
Honestly your best bet is a fresh install of your OS and practicing better security
When ever I try to copy a bitcoin address , it automatically changes to a similar one but different
Mind posting the address ? This is not something new,it's known virus which uses a Crypter to bypass your firewalls and anti-virus protections.As far as I know,a few Russian dudes off darknet started giving them off for free. 
Could you supply us with screenshots or something? Did you find anything malicious on your device? I'd be interested to know if this is really a virus or just you making small mistakes and being overly paranoid 
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This could be down to numerous things, it all depends on where you are when you are doing this, can you provide some more information.
Try the basics as suggested your cache and cookies and possibly your clipboard.
Try the basics as suggested your cache and cookies and possibly your clipboard.
When ever I try to copy a bitcoin address , it automatically changes to a similar one but different
Are you talking about the same address pasted in this thread: https://bitcointalksearch.org/topic/new-virus-this-addy-gets-pasted-19zm2pjq6u4jvb283gzkcpnukjeyb2yz2u-1331120 ?
When ever I try to copy a bitcoin address , it automatically changes to a similar one but different
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