vict0ni
Offensive Security Engineer · Penetration Tester · Red Teamer
What I Do
/> Penetration Testing
Comprehensive security assessments for web applications, APIs, infrastructure, and Active Directory environments. Identifying and exploiting vulnerabilities before malicious actors do, complete with actionable remediation strategies.
/> Vulnerability Research
Deep-dive research into software, AI systems, and enterprise appliances to discover zero-day vulnerabilities and develop cutting-edge exploits.
Professional Background & Roots
Hi, I'm Viktor "vict0ni" Markopoulos. I am an offensive security engineer with a robust
track record in penetration testing, red teaming, and vulnerability research. Having graduated with a
bachelor's degree in computer science, I have since worked across three continents around the world in the private and the public sector.
I am deeply fascinated by problems and challenges, and I truly enjoy solving complex problems. My primary focus
lies in mastering the cyber operator's tradecraft across Web Applications, APIs, Active Directory, AI,
and malware.
███████
Penetration Tester
FireTail
AI Security Researcher (Consulting)
Bitcrack Cyber Security
Senior Security Consultant
Greek Army - Ministry of National Defense
Cyber Security Engineer
Bitcrack Cyber Security
Security Consultant
Certifications & Trainings
CRTO
PenTest+
API PenTesting
Red Team Operations II
Research & Impact
CVEs & Vulnerability Research
Speaking & Events
- BSides Athens 2024: "Hunting for Elasticsearch Leaks"
- BSides Athens 2023: "From Mass Scanning Low Hanging Fruit to Digging for Critical Bugs"
- Intigriti 1337UP 1120: Live Hacking Event Participant (2020)
Global Organizations Hacked
I've discovered and responsibly disclosed vulnerabilities for some of the biggest organizations in the world, including, but not limited to
Realme
AUDI AG
Randstad
Red Bull
Swisscom
United Nations
