Symantec Uncovers Bitcoin-Stealing Trojan
The weak point in the system is that your Bitcoin wallet contains your private key. So once someone has your digital wallet, they also have control of your Bitcoins and can easily transfer the digital money from your account to theirs.
The worst part is you'll have to watch the thieves transfer your money to an identifiable account number, knowing there is nothing you can do about it and that you will probably never know who the thieves are.
http://www.pcworld.com/article/23053...ng_trojan.html