Depends what you're interested in, but as an iOS developer I highly recommend Jonathan Zdziarski's "Hacking and Securing iOS Applications", published by O'Reill

Depends what you're interested in, but as an iOS developer I highly recommend Jonathan Zdziarski's "Hacking and Securing iOS Applications", published by O'Reilly. It's a good primer, and covers a wide variety of both exploits and hacks. http://shop.oreilly.com/product/0636920023234.do http://shop.oreilly.com/product/0636920023234.do