Windows Software for Controlling Outgoing Packets?
non carborundum asks: "When using Windows I use Zonealarm because I like its ability to control outgoing packets. It's a good way to find out if some program is trying to call home. Zonealarm is much better than nothing, but 1 prefer open source solutions. Besides, it is overkill - I don't use it as a firewall, since I have a router, and it uses several megabytes of RAM. Better still would be a reverse honeypot - an app that catches outgoing requests, tests them against a database of known offending addresses and/or ports, and (optionally) tricks the offending application into thinking it has successfully phoned home. XP users in particular might be interested in such a tool."
Internet Explorer, the most ubiquitous and most exploited application of all time.