K2 is a security engineer. He works on a variety of systems ranging from UNIX to all other operating systems. He has spent a lot of time working though security issues wherever they exist; core kernels, networking services, or binary protections. K2 is a member of ww00w00 and is a contributing member of The Honeynet Project. He is both a researcher and security consultant, with some dubious hacker background.
Hack Proofing Your Network: The Only Way to Stop a Hacker is to Think Like One 2nd Ed.