[Raktor]

This book was written by Kevin Mitnick, the world's most famous hacker. It was a brilliant read, it showed no matter how secure any system can be, humans are always the weakest link. He showed how he had practically phoned up and asked for the password, and got it!

It re-ignighted my hacker mind

[Crescens]

I listened to a lecture from Mitnick himself while I was in Silicon Valley last summer about topics similar to those discussed in his book (mostly Social Engineering) ... I still have yet to actually read the book, though.