David Lebrun
Senior Red Team Consultant at Mandiant (part of Google Cloud)
Montreal, Quebec, Canada
Summary
👤
Senior🎓
Top SchoolDavid Lebrun is a Senior Red Team Consultant with 13 years of hands-on offensive security and cyber consulting experience, currently operating from Montreal as part of Mandiant within Google Cloud. He has progressed from early developer and analyst internships to senior roles at Bell and Mandiant, blending deep technical exploitation skills with practical enterprise security insights. David has taught systems security at École de technologie supérieure, bringing a proven ability to translate advanced red team techniques into actionable learning for practitioners. Known for proactive adversary simulation across large Canadian enterprises, he pairs offensive tradecraft with a background in software development and engineering—helping teams find and fix complex, real-world risks. His profile reflects a practitioner who understands both the attacker’s mindset and the operational constraints of large organizations, making him effective at driving measurable security improvements.
13 years of coding experience
1 year of employment as a software developer
Bachelor of Information Technology Engineering B.Eng., Bachelor of Information Technology Engineering B.Eng. at École de technologie supérieureComputer science - Technical degree (DEC), Computer Science, Computer science - Technical degree (DEC), Computer Science at Cegep du Vieux Montreal
French, English
Stackoverflow
433reputation
72kreached
12answers
7questions
Github Skills (48)
markdown10
appwrite10
javascript10
ctf10
security10
dsa-algorithm10
report-generator9
ctf-framework9
vulnerabilities8
pentest8
penetration-testing8
infosec7
laravel7
audit7
status-page7
Programming languages (8)
Github contributions (5)
davidlebr1/SharpRedteamTools
Jan 2021 - Feb 2022
Contributions:6 commits, 3 pushes, 2 issues in 1 year 1 month
NearbyApp/nearbyapp.github.io
Jan 2017 - Oct 2017
Contributions:56 commits, 10 PRs, 63 pushes in 9 months
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