Over 600000 Macs infected with Flashback Trojan

Two months ago, a new variant of the Flashback Trojan started exploiting a security hole in Java to silently infect Mac OS X machines.

Apple has since patched Java, but this was only yesterday. As of today, more than 600,000 Macs are currently infected with the Flashback Trojan, which steals your user names and passwords to popular websites by monitoring your network traffic.

Source:
http://www.zdnet.com/blog/security/over-600000-macs-infected-with-flashback-trojan/11345