Security on the Internet / Resources and references

Virus and Trojan horse
McAfee VirusScan
Dr. Solomon
Norton AntiVirus
Panda Software
Norman Virus Cleaner
F-Secure Secutity Information Center
IBM Antivirus research
AVERT Virus Information Center
Symantec Virus Encyclopedia
Symantec Hoax Page
CIAC Virus Database
Agnitum Tauscan
Back Orifice help page
Trojan Horse Attacks on IRC
Trojan horses: Back Orifice & Netbus
Free On-line Dictionary of Computing, Security

Confidentiality
MIT distribution site for PGP
The International PGP Home Page

Spamming
SpamNews
The Net Abuse FAQ
Fight Spam on the Internet!

Specialized tools against intrusions

Windows
Shields UP!
ConSeal ® PC FIREWALL
Norton Internet Security

Macintosh
NetBarrier
DoorStop

Unix
Tripwire

Documentation
Linux Shadow Password HOWTO

Parental control
Cyber Patrol
CYBERsitter
Cyber Snoop
Net Nanny
Smartparent.com (many resources)
SurfWatch

Other resources
Microsoft Security
Free On-line Dictionary of Computing (FOLDOC), section  Security