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

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

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/

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/

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

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

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

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

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

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

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/

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

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

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