How to build, design and test the security of web applications and web services.

Demonstrations of security risks and advice for safe use of a web browser.

Security consultant David deVitry offers background information, a free CSS vulnerability detector, and a list of vulnerable sites.

Full text of a paper discussing an 'attack' that threatens both privacy and data integrity. Written by Edward W. Felten, Dirk Balfanz, Drew Dean, and Dan S. Wallach. Available in various formats including PDF and Postscript.

Includes securing your server, protecting confidential documents on your site, safe CGI programming, client security, and privacy.

Total Simplicity is a full on technical company providing hosting, custom programming, security, and online stores.

Article on website hacking covering footprinting, IP scanning and an example IIS hack. Also has computer security weblog and an overview of BS7799.