
He spent two decades learning how large systems fail, then built Horizon3 to make companies attack themselves on purpose. His wager is simple: in cybersecurity, reassurance is cheap and proof has to be renewed.
Annual pentests produce a report. NodeZero keeps coming back, proves which weaknesses actually lead somewhere, and checks the repair - a simple loop that helped Horizon3.ai reach 7,000 customers and a $2 billion valuation.