Tim Medin is the founder and Principal Consultant at [Red Siege](https://www.redsiege.com/), a company focused to adversary emulation and penetration testing. Tim is also the SANS MSISE Program Director and a course author. Through the course of his career, Tim has performed penetration tests on a wide range of organizations and technologies. He gained information security experience in a variety of industries including previous positions in control systems, higher education, financial services, and manufacturing. Tim is an experienced international speaker, having presented to a organizations around the world. Tim is also the creator of the Kerberoasting, a technique to extract kerberos tickets in order to offline attack the password of enterprise service accounts. Tim earned his MBA through the University of Texas.