Christopher (Tophs) Elisan is a seasoned cybersecurity professional with specialized expertise in both offensive and defensive technologies. A premier Advanced Persistent Threat (APT) researcher, he has a proven track record in researching threat actor tooling, malware, deployment vectors, and attack infrastructure. His deep understanding of attacker behavior and the human elements behind cyberattacks enables him to bring a nuanced, strategic approach to threat intelligence.

Elisan’s career spans high-profile positions at organizations including RSA NetWitness, Polyswarm, Flashpoint, F-Secure, and Trend Micro, where he led global security teams through complex investigations, vulnerability management, and the deployment of advanced security solutions. In addition to his leadership expertise, Elisan has authored three books, including Hacking Exposed: Malware and Rootkits, and Malware, Rootkits & Botnets: A Beginner’s Guide. His thought leadership extends to international conferences, where he shares his expert opinions on the latest in cybersecurity threats and incidents.