Your average books are mostly, what will sell and not a technical treatise on the subject.
Most of your security is easily upended by simple oversights such as the repair crew that arrives to fix phones or even clean windows. The funniest one I remember is the repair crew was to check electrical outlets and while they were there they installed a power plug wifi hot spot and connected it to the banking LAN. No body gave it a second thought.
http://www.pcmag.com/article2/0,2817,2403675,00.asp
These PWN PLUGs are now much cheaper and look at the thing. Dang small.
Gotcha.
Bob
I'm looking to read up on cyber security or security as it pertains to Fortune 100 companies. I was curious if anyone had any good books to recommend?

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic