If you are using Zonealarm free firewall, you may have received a message today like this
It turns out that this simply a scare put out by Zonelarm to try to get people to upgrade to the Premium version of Zonealarm. Everyone got the same message today. I have been using ZA for years now, but I am switching firewalls now, this is pathetic for a company that had a good reputation.
http://imadethisdesign.blogspot.com/2010/09/zeuszbotaoaq-zonealarm-false-alarm.html