Don Bailey is a security consultant with iSEC Partners, Inc. Don has found and exploited unknown vulnerabilities in both userland and kernel code on many popular computing platforms including Mac OSX, Linux, FreeBSD, and OpenBSD. He also has a strong background in network protocol analysis and root-kit design and detection. Don's prior work includes threat assessment for a wide range of clients, including the financial sector, government sector, and Fortune 500 companies. Mr. Bailey has previously spoken at several national and international security conferences on various topics such as zero-day development, root-kit design, and NULL pointer dereferences.