Jean-Francois is a SANS instructor and author, primarily focused on red teaming and internal penetration testing, he teaches SANS purple and red teaming courses.
Jean-Francois is also a senior researcher at HelpSystems and helps define Cobalt-Strike's roadmap.

On top of his work at SANS and HelpSystems, Jean-Francois is also a freelance consultant working for big consulting firms such as TrustedSec.