Andy Applebaum is a security researcher at The MITRE Corporation, where he works on applied and theoretical security research problems, including as one of the leads on the CALDERA automated adversary emulation project and as a member of the ATT&CK team. His work tends to lie at the intersection of security, automation, and reasoning, with a growing personal interest in understanding how attackers can thwart machine learning algorithms in security settings. Andy received his PhD in computer science from the University of California Davis and he holds the OSCP certification. Outside of work, Andy is an avid chess player, having recently won the 2018 DEF CON chess championship.