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Nikos Kapellos

Partner, Offensive Security, Cyber, Technology and Transformation

Nikos is a Partner in Deloitte’s Cyber practice with 17 years of professional experience in cyber security, offensive security, and emerging technologies. Throughout his career at Deloitte, he has led complex cyber engagements across Greece and internationally, helping organizations strengthen resilience and adopt innovative security capabilities. He has extensive international experience through collaboration with Deloitte Member Firms and delivery across multiple markets. He specializes in Offensive Security, Red Teaming, GenAI-enabled cyber services, Physical Security Penetration Testing, and advanced adversarial simulations. Nikos has pioneered innovative offerings including Deepfake-enabled phishing simulations, AI-driven offensive operations, and Physical Security cyber awareness programs, positioning Deloitte Greece at the forefront of emerging cyber capabilities. Beyond client work, he actively contributes to the cyber community through conference speaking, mentoring, and knowledge sharing. Nikos holds industry certifications including OSCP, OSEP, OSCE, CRTO, CRTL, CISA, CAISP, and ACCA.

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