A few links to read about security.
Schneier on Security: perhaps the world's best know expert in security, Bruce Schneier comments security actuality, either on the IT side or on a broader scale, including state and terrorism security.
Security warrior: Anton Chuvakin blogs, mainly about security and security through log analysis. If you are interested in understanding logs and implementing them, each minute invested in reading this blog is worth it.
Chaos Computer Club: a German site for hackers. Most articles are in German, though.
Security in a company being about saving the company's money, better learn how easily it is lost. These two are quite interesting.
IT Project Failures
The IT Skeptic often more funny than productive, still you can learn interesting things.