Timur Duehr is a Senior Security Consultant at Matasano Security with over eight years computer consulting experience and a Master's degree in Mathematics. His professional experience includes application development, security assessment, and code review. At Matasano he develops security assessment tools, maintains Ragweed and Buby, performs blackbox and code assisted penetration tests, and source code audits. He has tested applications employing numerous technologies. Previously, he has presented at Blackhat USA, OWASP Chicago, and Black Hat Arsenal.