About.com Internet/Network Security
   Featuring articles and web links on Internet and network security for the Unix and Windows platforms.
   http://netsecurity.about.com/index.htm

Common Vulnerabilities and Exposures
   A searchable database of internet security problems.
   http://www.cve.mitre.org/

Dingbat's Warehouse
   Information about viruses, intrusion detection software, personal firewalls, and privacy. Hosts a streaming webcast called The Byte Show on security-related topics; CD-ROMs of interviews and software available.
   http://www.thebyteshow.com/

Dutch Security Information Network
   Security news and links in English and Dutch.
   http://www.dsinet.org/

Firstmonday - Covert Channels in the TCP/IP Protocol Suite
   Article on how to secretly transmit information using TCP headers.
   http://www.firstmonday.org/issues/issue2_5/rowland/

Google Online Security Blog
   News and insights from on security and safety on the Internet.
   http://feeds.feedburner.com/GoogleOnlineSecurityBlog?format=xml

ITsafe
   UK government security service to help protect computers, mobile phones and other devices from malicious attack. Offers advice, bulletins, glossary, library and links plus an alerting service.
   http://www.itsafe.gov.uk/

Intrusion Detection FAQ
   Frequently asked questions about intrusion detection, from the SANS Institute.
   http://www.sans.org/resources/idfaq/

My online security
   Security portal, providing internet security related news, resources, tools and services.
   http://www.myonlinesecurity.com

MySecurityIQ Free Security Awareness
   Provides free security and privacy education for employees and contractors. Includes free on-line certification.
   http://www.mysecurityiq.com/

Network Security, Filters and Firewalls
   General introduction to network security issues and solutions in the Internet
   http://www.acm.org/crossroads/xrds2-1/security.html

Stay Safe Online
   Tools and resources to empower home users, small businesses, schools and universities to stay safe online.
   http://www.staysafeonline.info/

SuraSoft
   Offers news, tutorials, articles, and forum.
   http://www.surasoft.com/

W3C Security Resources
   Links to security initiatives such as PICS Signed Labels, and XML-DSig. (W3C)
   http://www.w3.org/Security/

Why the Internet is not secure.
   An explanation of why consumer communications over the Internet are presently not secure.
   http://www.hydrophones.com/insecure.html