Abide to the highway code 

In the United Kingdom, the Highway code is the authority on how you should behave on the road. It contains rules for everyone, ranging from pedestrians to truck drivers.

 

Microsoft UK has released the "Developer Highway Code" which contains a large set of rules a developer should follow to make secure applications. It's aimed at architects, software developers, testers, security analysts and administrators, and contains a question lists, checklists and links to more information on security related subjects.

 

The e-book contains check-lists for different products and technologies, from .NET framework 1.1 to WCF.

 

Although it is a bit dated (there is a checklist for SQL Server 2000 but not for SQL Server 2005) it is still an interesting read.