alt.security
Security issues on computer systems.
alt.security.keydist
alt.security.ripem
comp.security.announce
Announcements from the CERT about security. (Moderated)
comp.security.firewalls
comp.security.misc
Security issues of computers and networks.
comp.security.unix
Discussion of Unix security.
comp.virus
computer viruses & security. (Moderated)
sci.crypt.research
Cryptography, cryptanalysis, and related issues. (Moderated)