Tim Medin is the founder and Principal Consultant at Red Siege. Tim is also a Principal SANS Instructor, the SANS MSISE Program Director and a SANS 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 organizations around the world. Tim is 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. Tim holds the GWAPT, GPEN, GMOB, GCED, and GCIH certifications and he previously held the CCNA certification.
Corey Overstreet is an experienced penetration tester and red team operator. He has been engaged with Fortune 500 organizations across a variety of industries, including financial services, government services, and healthcare. Additionally, he has over five years of systems administration and VMWare administration experience. He has participated as a member of the SECCDC Red Team since 2016. Corey is a credentialed OSCE and OSCP, and is currently pursuing the Offensive Security Exploitation Expert (OSEE) certification.