AVSec Advisory is a specialized cybersecurity consulting firm located in Athens, Greece, catering to both private and public sector organizations throughout Greece and the EU. We offer high-level, hands-on support in areas such as Virtual CISO (vCISO) services, compliance with NIS2 (Greek Law 5160/2024), implementation of ISO/IEC 27001, GDPR compliance, DORA preparedness, risk assessments, security audits, and AI governance based on the EU AI Act and ISO/IEC 42001. The firm is founded by Angelos Varthalitis, who has over 20 years of experience at the CISO level in sectors like transportation, financial services, and critical infrastructure. He is currently a DBA candidate researching governance related to Shadow AI. Our clients include municipalities, healthcare organizations, CySEC-regulated companies, and private businesses throughout Southern and Eastern Europe. Our credentials include various certifications such as C)CSSM, C)CSSA, CM)CSSA, C)ISMS-LA/LI, C)AICSO, C)ISSO-A (Mile2/ANAB); ISO 27001 Internal Auditor (Exemplar Global); EU GDPR DPO; and NIST CSF. The AVSec Academy (academy.avsecadvisory.eu) offers cybersecurity awareness and compliance training aimed at boards, executives, and security teams, encapsulated by our tagline: "Your CISO, without the complexity."