NSA
The Mac Hacker's Handbook came out in March 2009. That summer, Snow Leopard came out and broke many of the example. This talk covers those differences and how to still exploit Macs.
Charlie Miller was a US National Security Agency researcher. He is the first guy to hack the iPhone and G1 Android phone. He was the winner of CanSecWest 2008, 2009, and 2010 Pwn2Own. He is also a author of Fuzzing for Software Security Testing and Quality Assurance and The Mac Hacker's Handbook.
His marathon record is 3:59:52.(great!) :)