| **Technology & Cybersecurity Executive | CIO / CISO / CTO Leadership** |
Official website: https://www.iliadis.net/ ORCID: https://orcid.org/0000-0002-0692-1535 LinkedIn: https://www.linkedin.com/in/johniliadis/
His work spans 20 years in cybersecurity strategy, secure architecture, cloud transformation, zero-trust adoption, AI governance and regulatory alignment — connecting security posture with business risk appetite and measurable outcomes. Selected quantified achievements include a 37% improvement in service availability (current role), 85% improvement in disaster recovery readiness, and zero-downtime infrastructure migration for tens of thousands of users.
His career began in information-security research, progressed through applied security R&D and enterprise infrastructure engineering, and evolved into technology and cybersecurity leadership spanning cyber resilience, risk, governance and digital transformation.
Distinguished credentials in management (Chartered Manager, CMgr MCMI) and cybersecurity (CISSP, CISM, CRISC, C|CISO, ISSMP, CCSP, COBIT, ITIL, DPO Executive) reinforce a PhD in Information Security and an MSc from Royal Holloway, University of London.
Elected to lead community engagement at ISC2 Hellenic Chapter across three consecutive terms (2021–2027) — as Board Member, President of the Board (2023–2025) and current Chair of the Audit Committee — driving significant measurable growth: chapter membership +20%, social-media following +24% (and +100% in the prior term), event attendance +80%, sponsorships +150% and speaking invitations +50%. The chapter received national and global recognition including the Global Achievement Award for the EMEA Region (ISC2, 2022 and 2024) and multiple CyberSecurity Leadership Awards (Boussias, 2022–2026). Currently also serving as Advisory Board Member for the MSc in Law and Information & Communication Technologies at the University of Piraeus (2025–present).
As a published researcher and invited thought leader, John has authored over 30 articles and research papers on cybersecurity strategy, CISO leadership, cyber risk, AI governance and cloud security, and has delivered keynotes, opening speeches and panel moderation at major cybersecurity conferences in Greece and across EMEA.