Ioannis Stais
Director Of Tiger Team Services (Organization Security Testing)
Greece
Summary
👤
Senior🎓
Top SchoolIoannis Stais is a cybersecurity leader with 11+ years of hands-on experience leading adversary-driven testing and resilience programs, currently directing Tiger Team Services at CENSUS S.A. He has led or contributed to 100+ assessments across red teaming, protocol analysis, mobile and web banking, NFC payments, ATMs/POS, medical devices, and MDM solutions, translating complex technical findings into board-level risk insights and regulatory-ready remediation. Ioannis blends deep research pedigree—MSc in Computer Systems Technology and university/ENISA collaborations—with practical innovation, authoring Practical IoT Hacking and advancing fuzzing and ML-driven vulnerability discovery. He built and scaled capability portfolios including AI Cybersecurity Resilience Testing, Continuous Security Assessment, and OT/CPS testing to meet DORA, TIBER-EU and ISO-aligned requirements. Known for turning offensive techniques into measurable operational risk validation, he also advises executives and regulators on threat-led testing strategies. Based in Greece, he pairs rigorous academic research with prolific field experience and a track record of making cutting-edge security research operationally impactful.
11 years of coding experience
11 years of employment as a software developer
Master of Science (MSc), Computer Systems Technology, Master of Science (MSc), Computer Systems Technology at Ethnikon kai Kapodistriakon Panepistimion Athinon
Greek, French, English
Github Skills (79)
api-platform10
evo10
security10
pushover10
magellan10
hikvision10
alarm10
pushbullet10
surveillance10
spectra10
homekit10
eclass10
auditing10
homebridge10
needle9
Programming languages (8)
Github contributions (5)
lightbulb-framework/lightbulb-framework
Nov 2016 - Nov 2020
Tools for auditing WAFS
Contributions:84 commits, 21 PRs, 76 pushes in 4 years 1 month
securitysecurity-toolsauditing
GeorgeArgyros/sfalearn
Oct 2016 - Jun 2020
Contributions:27 commits, 12 pushes in 3 years 9 months
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