Martin Voelk

Hello! I’m an IT and cybersecurity veteran with 27 years of experience across ISPs, banks, manufacturers, government, and many other industries.

Today I focus on offensive AI security - AI/LLM penetration testing, AI red teaming, agentic attacks, and bug bounty work. I work at an AI security startup and teach practical AI hacking on Udemy.

I previously ran a penetration testing company, Cyber 51 LLC, which I sold in 2018. Before that I worked as a senior penetration tester across infrastructure, web, mobile, wireless, IoT, and AI.

Focus areas
Offensive AI security / AI red teaming / LLM penetration testing
Penetration testing (web, infrastructure, mobile, wireless, IoT)
Application security
Network security
OSINT and cyber investigations

AI red teaming certifications
AI Red Teaming Professional / AIRTP+ (Learn Prompting)
Certified AI/ML Pentester (SecOps Group)
Certified Agentic AI Pentester (SecOps Group)

Penetration testing certifications:
BSCP (Burp Suite Certified Practitioner)
OSCP (Offensive Security Certified Professional)
OSWP (Offensive Security Wireless Professional)
CREST Registered Penetration Tester (UK) (retired)
CEH v8 (retired)

General security certifications
CISSP #339608

Bug Bounty Hunter (Zseano)
Since 2021 I hold the #1 spot for the Researcher with most vulnerabilities found

Cisco certifications:
CCIE #13708 (July 2004); Emeritus as of 2018