Debian Security Team

https://security-team.debian.org/

Mail

What each list is for:

IRC Channel

We hang-out in the #debian-security channel on OFTC (http://www.oftc.net/), stop by if you'd like. We can also add you to the Alioth project so you have SVN write permission, and you can test drive it on the testing issues for however long you like to get an idea or feel comfortable (and hey, it really helps!).