Computer security depends on a quite different factors, including the software we use to keep hackers out. Antivirus software is designed to protect our devices unwanted harm, but not all of them work properly. Trend Micro, which is a very popular antivirus software among Windows users, made computers vulnerable to being hacked. It goes without saying this debacle could have affected Bitcoin users as well, simply because their entire computer could be hijacked with very little effort.
http://bitcoinist.net/using-trend-micro-antivirus-put-bitcoin-users-at-risk/
