In June 3 – 6, there was Tech Ed North America conference in New Orleans. The videos are available on channel9. I have watched a few very good sessions, and I can recommend you especially 5 of them.
Live Demonstration: Hacker Tools You Should Know and Worry About (Hasain Alshakarti and Marcus Murray)
This is my favourite session. You can learn about various security tools. They show things we should be aware of.
Another session. Now in enterprise point of view. They discussed techniques how companies are getting hacked.
This session shows that our passwords are not 100% secure when stored in Windows.
Session about most common mistakes, which can be used to hack you.
General overview and new enchancements of Web Tools and Features in .NET.