NTBugtraq
The source for bugs, exploits, and vunerabilities in Windows NT versions 3.5 - 4.0

Risks Digest
Forum on risks to the public in computers and related systems.

NT Security Alerts and Digest Newsletter
Windows NT security alerts from several known resources. When new problems arise, alert is sent out.

Check Point FireWall-1 discussion
Searchable archives of Check Point FireWall-1 mailing list and online discussion

InfoSec News
Privately-run medium traffic list that caters to distribution of information security news articles.

FreeBSD Resources
Mailing lists pertaining to FreeBSD. freebsd-security and freebsd-security-notifications are sources of official FreeBSD specific notifications.

Pete Moss Publications
Daily journals of concise, complete e-news for pro's, about hacking, cracking, spam, and security issues.

CyberCrime-Alerts
Computer crimes and related arrests are the focus of these mail alerts. Subscribers can receive 5-20 messages per week as news breaks.

IWS INFOCON Mailing List
The INFOCON mailing list is devoted to the discussion of cyberthreats and all aspects of information operations, including offensive and defensive information warfare, information assurance, psychological operations, electronic warfare, ....

SecureMac
Macintosh security mailing list for advisories, patches, and alerts.

The ISO17799 Security Newsletter
News, background and updates on this international security standard.

Cyberguard Mailing list
CyberGuard firewall mailing list information, subscription and searchable archives.

Bugtraq Moderated by Security Focus
Bugtraq mailing list archives of UNIX, NT, Win95, Novell, and Mac, bugs and exploits.

Redhat Linux Mailing list manager
Focuses on Linux and Redhat related security information specifically the Linux-security and Redhat-watch-list lists.

Microsoft TechNet Security - Product Security Notification
Microsoft techNet Security - Product Security Notification. Instructions on how to join the mailing list for Product Security bulletins notification.

Debian GNU/Linux -- Mailing List Subscription
Security mailing lists that deal with Debian Linux security issues, specifically the debian-security-announce and debian-security lists.

Moderated Firewall and Security Mailing List
Firewall-wizards is a high-quality fully moderated firewall and security mailing list.

[nn] Netscreen News Mailing List Archive
Support and communication surrounding Netscreen products for medium to advanced administrators.

The 'Security Digest' Archives
Dedicated to the history of the early 'Security Digest' archives, from the Unix 'Security Mailing List', through the Zardoz 'Security Digest' to the Core 'Security List'.

Alert Security Mailing List
Monthly security tips and alert mailing list. Pay subscription service provides information, tips and developments to protect your Internet computer security

Der Keiler
Searchable real-time updated archive of major security lists and newsgroups, including Cert, Securiteam, Linuxsecurity, VulnWatch, Full-Disclosure, Bugtraq, Incidents, Securityfocus, and several Usenet groups.

Security Clipper
Mailing list aggregator offering a selection of security lists to monitor.

PC Security Weekly
Weekly digest of computer security issues written for home users.