Guillaume Ross
Summary
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RockstarGuillaume Ross is an information security trainer, consultant and boutique firm owner based in Candiac, Quebec with nine years of professional experience securing cloud and endpoint environments. He leads Caffeine Security and teaches for organizations like IANS and Pluralsight, applying a pragmatic philosophy of securing only what's necessary while preserving user experience. Guillaume blends leadership roles (former Deputy CISO at JupiterOne, Head of Security at Fleet) with hands-on open-source work — notably contributing CIS benchmark policies and macOS/Windows security checks to the widely used FleetDM project. An investor and advisor in privacy-focused products such as Kagi, he pairs product-minded security engineering with practical, auditable controls that scale across clouds and endpoints.
9 years of coding experience
Github Skills (11)
windows10
endpoint-security10
it-security10
macos10
osquery10
security10
vulnerability-management9
device-management8
bash4
gitops4
python4
Programming languages (12)
Github contributions (5)
fleetdm/fleet
Jan 2022 - Jan 2023
Open-source platform for IT, security, and infrastructure teams. (Linux, macOS, Chrome, Windows, cloud, data center)
Role in this project:
Security Engineer
Security EngineerContributions:213 reviews, 110 commits, 184 PRs in 11 months
Contributions summary:Guillaume primarily contributes to the implementation of security policies and configurations within the FleetDM platform. Their work includes adding and modifying security-related checks and queries, particularly focusing on macOS and Windows endpoint security. They also updated existing configurations and routes related to security documentation and reports, reflecting a focus on improving the platform's security posture and reporting capabilities. Additionally, they added CIS benchmark policies and enhanced policies for security checks.
operating-systemsriskcloud-securitytelemetryworkstations
GuillaumeRoss/oops.computer
Oct 2021 - Sep 2022
oops.computer blog
Contributions:3 reviews, 10 PRs, 44 pushes in 11 months
oops
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