Guillaume has worked as a manager of blue teams, as a security consultant, and way before that as an enterprise IT person focused on endpoints.
Having worked for startups to fortune50, he knows how to build a security program, but having had to do the work, he also dislikes doing meaningless "best practices" work that has no practical value.
For these reasons, he focuses on providing guidance that really brings value to companies when it comes to protecting their environments and data.