Google Hacking for Penetration Testers

White papers:
Cross-site scripting:
Cross-Site Scripting, by Kevin Spett, www.spidynamics.com/whitepapers/SPIcross-sitescripting.pdf
The Cross-Site-Scripting FAQ on CGI Security, www.cgisecurity.com/articles/
SQL injection all three of these are excellent papers written by some of the sharpest minds in computer security:
Web Application Disassembly with ODBC Error Messages, by David Litchfield, www.nextgenss.com/papers/webappdis.doc
Advanced SQL Injection in SQL Server Applications, by Chris Anly, http://www.nextgenss.com/papers/advanced_sql_injection.pdf
Blind SQL Injection, by Kevin Spett, www.spidynamics.com/support/whitepapers/Blind_SQLInjection.pdf
Web sites:
The Open Web Application Security Project (OWASP), www.owasp.org, hosts an annual conference and local chapters on Web application security. The site offers many excellent papers as well as some tools.
CGI Security, www.cgisecurity.com, offers papers, articles, links, and more by Bob Auger
Security Focus, www.securityfocus.com, the CNN of the InfoSec world.
E-mail:
Web Application Security on Security Focus, webappsec@securityfocus.com, moderated, moderate traffic. This is the de facto OWASP list and deals only with Web application security.