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Niclas Braun is a technology entrepreneur and the founder and CEO of 4SI. His work focuses on AI governance, verification infrastructure and the trust boundary between digital authority and physical reality, including how identity, authenticity and authorization can remain dependable in AI-driven and post-quantum environments.

Niclas Braun is a technology entrepreneur and category builder whose path spans immersive software, autonomous and aerospace systems, artificial intelligence and verification infrastructure. He is the founder and CEO of 4SI, where he works on the emerging field of physical trust: connecting digital authority to independently verifiable physical reality. His current focus includes AI-agent authorization, identity and authenticity in adversarial environments, and the continuity of trust as quantum computing changes long-standing security assumptions. Braun approaches technology from first principles and writes about the institutional and technical controls required for high-capability systems. He is the author of the independent technical report Verification as a Control Primitive for Frontier AI.