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Gregory Leonard

Greg is a principal consultant with Optiv Security, Inc. where he helps clients secure their applications by performing penetration tests, secure code reviews, and risk assessments. Greg's responsibilities over the course of his career have included application architecture and security, infrastructure design and implementation, performance diagnostics, and security research.

In his time with SANS, Greg has authored application security content related to secure coding for web and mobile applications, threat awareness, and top development design flaws as well as contributing to DevSecOps and cloud security content.

Listen to Gregory discuss "Blocking XSS attacks with Content Security Policy" in this SANS webcast.

"The content and more importantly Greg's presentation of DEV541 was exactly what I was looking for to improve my knowledge." - Gilbert Lappano, Northrop Grumman IS

"The instructor is well versed in subject and this makes the complex issues more understandable." - Mason Jackson, NGIS

Online options available. Train from any location.

Upcoming Courses Taught By Gregory Leonard
Type Course / Location Date Register

Live Online
SANS 2020
Virtual - US Eastern
Apr 3, 2020 -
Apr 4, 2020

Training Event
Washington, DC
Jun 13, 2020 -
Jun 14, 2020

Training Event
Sep 7, 2020 -
Sep 11, 2020

*Course contents may vary depending upon location, see specific event description for details.