Ryan O’Donnell

Ryan O’Donnell is a Senior Security Engineer at Microsoft with more than 13 years of experience in cybersecurity, specializing in penetration testing, red teaming, incident response, threat hunting, and cloud security. Throughout his career, he has helped organizations identify vulnerabilities, strengthen defenses, and respond to sophisticated cyber threats across enterprise environments.

Ryan is particularly known for his expertise in Microsoft 365 security and detection engineering, focusing on practical methods for identifying attacker activity and improving organizational resilience. In addition to his technical work, he is an active member of the cybersecurity community and has presented at industry conferences including Wild West Hackin’ Fest, SaintCon, Hack Space Con, Hack Red Con, BSides Las Vegas, BSides NoVa, and BSides Roanoke.

Ryan holds a Master’s degree in Cybersecurity from George Mason University and has earned several highly respected industry certifications, including OSCP, OSEP, GCFA, and GREM. His blend of offensive security expertise and incident response experience enables him to provide actionable insights that help organizations better detect, investigate, and mitigate cyber threats.