General Security Guidance Videos

After talking about some of the work on WCF security I
thought I'd mention an unrelated but similarly beneficial collection of videos on the
MSDN security developer center.
These security videos cover a wide variety of topics, each in the format
of explaining how to solve a particular problem. The videos aren't specific to WCF so you
might not be interested in all of them but there are quite a few that should be
usable either directly or with minor adaptation. Look at the problem proposed in the video
title and don't be afraid to skip through sections that go into detail on a
technology that you're not using. The
videos on general security topics, such as user principals or cryptography, tend
to carry over the best.