Just finished Ghost in the Wires by Kevin Mitnick. It's Mitnick's memoirs about his hacking life, it's pretty crazy. He started out hacking phone companies and then moved onto computers. The end of the book is focused on his run from the law, constantly changing identities and moving places. Get this, he gathered all kinds of critical information on large cellphone companies like sources codes and other stuff, that he never used or sold, to him it was about seeing if he could get it. The thing that is most crazy to me, is that he mostly "hacked" people, aka social engineered them. Social engineering is basically deceiving people into thinking you're someone else, having enough info to convince them as such, and then just asking for whatever information he needed.
That's crazy, when he just wanted information, he would just call and get it. Mitnick pulled a "catch me if you can" after he got caught, started working for computer security companies and then eventually starting his own. Great book is great.