A colleague of mine found this great resource of SQL Server whitepapers:
http://www.sqlskills.com/whitepapers.asp.
David Litchfield has found an interesting new security vulnerability in Oracle databases and also done a comparison on whether Oracle or SQL Server is more secure. Dangling Cursor Snarfing: A New Class of Attack in Oracle - http://securitywatch.eweek.... Which Database is More Secure? Oracle vs. Microsoft - http://www.databasesecurity... ......