Sergey Tairyan is a Global CISO, security innovator, and international speaker with over 15 years of experience across government, finance and iGaming sectors. As Group CISO at Digitain, he built the company’s entire cybersecurity ecosystem from the ground up, achieving ISO 27001 and PCI DSS compliance while pioneering Armenia’s first internal bug-bounty programs. Sergey holds a Ph.D. in Mathematical Cybernetics and multiple top international certifications. A recognized thought leader, he frequently speaks at global conferences and mentors the next generation of cybersecurity professionals, driving innovation in AI-driven and post-quantum security worldwide.