David Kennedy, a.k.a. ReL1K, is a professional security ninja who likes to break things in his spare time. He has been featured as a computer security expert in numerous TV appearances and news interviews, and has also spoken at DEFCON, Black Hat, and other high-profile hacking conferences.
"You simply cannot go wrong with this book if you want to learn more about Metasploit, or even if you want to learn more about penetration testing. Hands down, my new favorite Metasploit book."
--Sam Stover, ;login: The Usenix Magazine, August 2012
"A valuable resource for people who are interested in security but don't have the time or money to take a training class on Metasploit."
"A book that should be on the shelf of any serious computer security professional. And if you're just starting to dabble in the world of network security, this is a great resource to start your journey."
--Thomas Duff, Duffbert's Random Musings