Martin Grottenthaler
Founder & Pentester at VidraSec 🦦
Austria
Summary
👤
Senior🎓
Top SchoolMartin Grottenthaler is a founder and penetration tester with 9 years of hands-on experience helping organizations in Austria and beyond harden their defenses through targeted red teaming, internal network assessments, and Active Directory/cloud security reviews. After rising through roles at SBA Research—where he built the Red Teaming service and led trainings—he launched VidraSec to deliver practical, attack-focused testing and consultative mitigations before vulnerabilities are exploited. His background spans web app testing, fuzzing and binary analysis from early internships to advanced Windows and cloud offensive work, giving him a rare full-stack offensive perspective. Martin combines academic rigor from an MS in Information Assurance with entrepreneurial drive, and he often translates complex technical findings into actionable security programs for clients.
10 years of coding experience
7 years of employment as a software developer
ICT Summer School, ICT Summer School at Metropolia University of Applied SciencesMaster of Science - MS Computer and Information Systems Security/Information Assurance, Master of Science - MS Computer and Information Systems Security/Information Assurance at Hagenberg Campus - FH Upper AustriaComputer Science, Computer Science at UADE
German, English, Spanish, Romanian
Stackoverflow
313reputation
73kreached
1answer
8questions
Github Skills (80)
anki10
kali-linux10
headers10
gitversion10
lnk9
powershell9
windows9
encryption9
obsidian9
automations9
owasp8
cybersecurity8
infosec8
http8
security8
Programming languages (11)
Github contributions (5)
DEVASEC/404-checker
Jul 2022 - Feb 2026
A 404 checker for our website. Can be integrated in the CI pipeline.
Contributions:5 PRs, 4 pushes in 3 years 7 months
VidraSec/hugo-fresh
Mar 2024 - Mar 2026
Hugo Fresh Theme
Contributions:4 pushes in 2 years
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