Nikos Katsiopis
Principal Cyber Security Consultant at NVISO Security
Athens Metropolitan Area Greece
Summary
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Rockstar🎓
Top SchoolNikos Katsiopis is a Principal Cyber Security Consultant based in Athens with six years of hands-on experience in offensive security, red teaming, and penetration testing. He specializes in Windows and Active Directory security, AV/EDR evasion, and adversary simulation, having led objective-driven assessments including TIBER/TLPT and Purple Team engagements. His background spans advisory and field roles at NVISO and EY as well as critical infrastructure defense and incident response work inside the Hellenic Army, where he supported national cyber exercises and malware analysis. Nikos pairs custom offensive tool development and endpoint testing with practical blue-team collaboration to improve detection and resilience. Active on platforms like GitHub and HackTheBox, he blends continuous self-learning and community challenge work with professional delivery. Colleagues describe him as quietly curious—“Im nobody...” in his GitHub bio belies a focused practitioner who prefers results over spotlight.
6 years of coding experience
5 years of employment as a software developer
Master of Engineering - MEng Information and Communication Systems Engineering, Master of Engineering - MEng Information and Communication Systems Engineering at University of the Aegean
Greek, English
Github Skills (19)
penetration-testing10
privilege-escalation10
enumeration10
windows10
hacking10
security10
cobalt10
active-directory10
windows-server10
pentesting10
csharp9
persistence9
pentest9
com-object9
microsoft6
Programming languages (4)
Github contributions (5)
S1ckB0y1337/TokenPlayer
Aug 2020 - Jan 2021
Contributions:2 releases, 60 commits, 24 pushes in 4 months
S1ckB0y1337/PatternAnalyzer
Feb 2020 - Aug 2020
Contributions:9 commits, 8 pushes, 1 branch in 6 months
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