Expertise: Web·Challenger: John Hammond

Samy Kamkar, cofounder of Openpath Security, is an engineer and huge nerd. His open source software, hardware, and research highlight the insecurities and privacy implications in everyday technologies, from the Evercookie which produces virtually immutable respawning cookies, to SkyJack, a drone that wirelessly hijacks and autonomously controls other drones. His work has been cited by the NSA, triggered hearings on Capitol Hill, and has been the basis for security advancements across vehicles, smartphones, and other technologies.

Matt Austin is an accomplished application security expert with over 11 years of experience focused on security research, development, and engineering.

Expertise: Web·Challenger: John Hammond

Sam Curry is a white hat hacker with HackerOne and a consultant at 17security, LLC, an assets security company. His passion is hunting for bugs and making the internet a safe space for all. In his spare time he runs a blog to better explain web app security for individuals and businesses.

Expertise: Forensics Investigation·Challenger: Sarah Edwards

Jessica Hyde is an experienced forensic examiner in both the commercial and government sectors. She is currently the Director of Forensics at Magnet Forensics and an Adjunct Professor teaching Mobile Forensics in the graduate program at George Mason University, where she achieved an MS in Computer Forensics. Jessica is the host of Cache Up, a weekly podcast where she interviews digital forensics practitioners. She is also involved in several community efforts including as Chair of DFIR Review, 1st Vice President of the New York Metro High Tech Crime International Association Chapter, advisory board for Cyber Sleuths Lab, and a member of the Editorial Board for the Forensic Science International: Digital Investigations Journal and a volunteer mentor with I Play Like a Girl. Her previous roles included performing forensic examinations as a Sr. Mobile Exploitation Analyst for Basis Technology, Senior at EY, and Senior Electrical Engineer at American Systems. Jessica is also proud to be a veteran of the United States Marine Corps.

Expertise: Forensics Investigation·Challenger: Sarah Edwards

Michael George AKA Pickman, has worked in the macOS security space for half a decade. He’s focused on creating the best macOS EDR. Loves to contribute open source projects and finds time here and there to snowboard.

Expertise: Reverse Engineering·Challenger: Chris Eagle

Yan Shoshitaishvili (Zardus) is an assistant professor at Arizona State University, where he pursues research in automated program analysis and vulnerability identification techniques. As part of this, Yan led Shellphish's participation in the DARPA Cyber Grand Challenge, applying his research to the creation of a fully autonomous hacking system that won third place in the competition. Underpinning this system is angr, an open-source binary analysis project created by Yan (and others!) over the years. When he is not doing research, Yan is pushing the area of cybersecurity competitions into the future as a founder of the Order of the Overflow, the organizers of DEF CON CTF. In order to inspire students to pursue cybersecurity (and, ultimately, compete at DEF CON!), Yan has created pwn.college, a practice-makes-perfect system for cybersecurity education.

Expertise: Reverse Engineering·Challenger: Chris Eagle

Jordan is one of the founders of Vector 35, makers of Binary Ninja. He's been playing CTFs since DEF CON 9, including playing 9 straight DEF CON finals and winning three of those times. He was the team captain behind ShmooCon's Ghost in the Shellcode CTF and has been a long-time challenge author and judge at CSAW. Lately he's too lazy to play CTFs and just likes to talk about them. He ran the behind-the-scenes game analysis for DARPA's Cyber Grand Challenge, and provided live commentary during the Hack-A-Sat competition at last year's virtual DEF CON.

Expertise: Hardware·Challenger: Joe Grand

Tyler Rosonke, aka zonksec, is a penetration tester. He loves learning and scripting his way out of a tight spot, which makes this area of security right up his alley. He is a member of DC402 and is on the Kernelcon Organizing committee, mainly working on the electronic badge. He loves to tinker and figure out how things tick, whether that be on computers, amateur radios, electronics, pinball machines, vintage mopeds, 3d printers, or drones.