Leonid Posadskov is the CEO of Luminari株式会社, a security-first consulting bureau based in Tokyo. His work bridges cybersecurity, artificial intelligence, and narrative design, with a focus on how stories and technology together shape resilience and trust.

With over a decade of experience across finance, telecommunications, retail, and entertainment, Leonid has guided enterprises, governments, and startups through transformations ranging from AI adoption and cloud migration to large-scale security architecture. He is known for balancing technical innovation with business realities, helping organizations design solutions that are both effective and secure.

At Luminari, Leonid leads projects that combine gamification and simulation to strengthen human awareness of security risks. The company’s flagship product, Siminari, is a gamified cybersecurity training simulator that immerses learners in realistic attack scenarios where choices matter. By transforming passive instruction into active decision-making, Siminari equips enterprises, universities, and government institutions to develop lasting cyber resilience.

Beyond consulting, Leonid draws on his early background in game development workflows to explore interactive storytelling and simulation design. His creative work investigates how myths, narratives, and alternate realities can be applied to complex technical and social challenges. This fusion of technology and storytelling reflects his broader vision: that security is not only about defending systems, but also about shaping the narratives that sustain trust.

Leonid holds an MBA from the Quantic School of Business and Technology, where he focused on strategy and innovation. He continues to engage internationally, mentoring emerging professionals, hosting awareness events, and advancing research into AI and quantum security.

His guiding belief is that resilience in the digital age depends not only on technical defenses but also on the human stories that frame how we understand and act within systems.