Uriel Kosayev

Uriel Kosayev is a seasoned cybersecurity researcher, reverse engineer, and keynote speaker with over a decade of hands-on experience in malware analysis, offensive security, and real-world incident response.

He is the founder of TrainSec Academy and the author of Antivirus Bypass Techniques and MAoS – Malware Analysis on Steroids, two highly regarded resources in the cybersecurity community. Uriel has worked with global enterprises, led red team operations, and conducted high-impact malware investigations that exposed advanced threat actor tactics.

Known for his ability to break down complex topics into practical, actionable knowledge, Uriel teaches with one goal in mind: to make professionals think like attackers and act like defenders. His courses are packed with real-world examples, battle-tested techniques, and a methodology built on actual field experience, not textbook theory.