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

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

Tiger Tools, Inc. Tools for a professional security analysis. http://www.tigertools.net/

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/

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

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

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

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

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

Operation Security Directory of links and tools. http://www.operationsecurity.com/

Intelligent Hacker's Choice Mailing list archives, technical articles, ask the expert, and news. http://www.netsys.com/

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

Security Audit and Internal Audit Shop Security audit checklists, plans and reference material. http://www.security-audit-internal-audit.com

Baltimore Technologies Public Key Infrastructure specialists offer security solutions, including certificate authorities, cryptographic toolkits for Java, C and XML; hardware cryptographic devices and security applications. http://www.baltimore.com/

wINJECT Low-level packet builder/injector for win9x dialup users. It allows you to create custom packets with real or spoofed IP addresses. http://big.badlink.net

NetWolves Makes Internet gateway solutions for LAN-to-Internet connectivity. The FoxBox is an e-business platform for distance learning, data-security, VPN networks. http://www.netwolves.com/new_netwolves/index.php

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

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

Murray Associates Eavesdropping detection and counterespionage consulting services. Includes espionage newsletter archive and downloadable guidance on security and bug detection. Based in Oldwick, New Jersey, USA. http://www.spybusters.com/