A clever hacking method has been revealed that might be stealing your money from your Ethereum wallet. A user posted on r/Ethereum subreddit, the largest community of Ethereum (over 131,000 members) that a malware is installed within your computer capable of changing Ethereum addresses simply by updating it in the moment the user copies and pastes the address.
A similar type of virus “Trojan.Coinbitclip” was implemented within the computers of Bitcoin users last year. This was then discovered by the major antivirus development firm Symantec in February 2016. This Trojan was spread around by different phishing attacks, scams or other usual hacking methods. Hackers stole a lot of Bitcoin wallets just by reallocating them to different wallet addresses.
Full article here: http://ethereumworldnews.com/careful-copying-pasting-ethereum-wallet-address/