For those interested in staying up to date and taking part in computer security and privacy, these are some active mailing lists that deal with it:

Off The Record (Encryption for IRC and IM)

This list is used for open discussion about Off-the-Record (OTR) Messaging software.
Subscribe at:

http://lists.cypherpunks.ca/mailman/listinfo/otr-users

Archived mailing list:
http://lists.cypherpunks.ca/pipermail/otr-users/

The or-talk mailing list is for all discussion about theory, design, and development of Onion Routing.

To join the or-talk mailing list, send an e-mail message to majo...@seul.org with no subject and a body of “subscribe or-talk”

Or-talk archived mailing list:
http://archives.seul.org/or/talk/

Or-talk can also be accessed as a read only newsgroup via news//:news.mixmin.net (SSL port 563, no username no password).

The name of the group is local.lists.tor.talk

Security Basics archived mailing list:
http://www.securityfocus.com/archive/105

To join email security-basics-subscribe @ securityfocus.com

Computer Forensics archived mailing list:
http://www.securityfocus.com/archive/104

To join email forensics-subscribe @ securityfocus.com

GnuPG Users archived mailing list:

http://lists.gnupg.org/pipermail/gnupg-users/

To join visit:

http://lists.gnupg.org/mailman/listinfo/gnupg-users

Mixmaster and remailer operatros archived mailing list:

http://lists.mixmin.net/pipermail/remops/

To join visit:

http://lists.mixmin.net/mailman/listinfo/remops

Computer Forensics SPANISH archived mailing list:

http://www.securityfocus.com/archive/128

To join email forensics-es-subscribe @ securityfocus.com

Computing mailing lists and Usenet groups accessible from the web:

These websites are a way to access computer related Usenet and mailing lists for those who dont want or can’t use their Usenet or email client:

http://www.opensubscriber.com

http://www.nabble.com/

http://www.archivesat.com/

http://www.gmane.org/

Other mailing lists that may be of interest:

Lynx, Unix text based browser mailing list archive on the web:
http://lists.gnu.org/archive/html/lynx-dev/To join the Lynx browser mailing list visit:
http://lists.nongnu.org/mailman/listinfo/lynx-dev

Elinks, Unix text based browser mailing list archive on the web:
http://linuxfromscratch.org/pipermail/elinks-users/

To join the Elinks browser mailing list visit:
http://linuxfromscratch.org/mailman/listinfo/elinks-users

Mozilla groups can be accessed through the free Usenet server: news://news.mozilla.org

Opera browser Usenet groups can be accessed through the free Usenet server:  news://news.opera.no/