Secure Programming for Linux and Unix Howto
- Design and implementation guidelines for writing secure programs for POSIX operating systems.
- http://www.dwheeler.com/secure-programs/

Oulu University Secure Programming Group
- Goal: study, evaluate, develop means to implement and test application and system software to prevent, discover and prevent implementation level security vulnerabilities pro-actively, and via software security testing.
- http://www.ee.oulu.fi/research/ouspg/

Secure Programming Techniques
- First installment in multipart series of excerpts from Practical Unix & Internet Security, 3rd Edition; tips and general design principles to code by to avoid security-related bugs. O'Reilly Media.
- http://www.onlamp.com/pub/a/onlamp/excerpt/PUIS3_chap16/index1.html

SecureProgramming.com
- Recipes for cryptography, authentication, networking, input validation, certificate, many security issues. Weblog, glossary, articles, books, links, software.
- http://www.secureprogramming.com/

Defensive Programming
- Growing article, with links to many related topics. [Wikipedia]
- http://en.wikipedia.org/wiki/Defensive_programming