Introduction
Assaf Rappaport is the co-founder and chief executive officer of Wiz, a cloud security platform he started in January 2020 alongside Ami Luttwak, Yinon Costica, and Roy Reznik. Born in Israel in August 1983, Rappaport had already built and sold one cybersecurity company, Adallom, to Microsoft before starting Wiz, and led Wiz through a rapid growth trajectory that culminated in Alphabet’s roughly $32 billion acquisition of the company, which closed in March 2026 and is now counted among the largest cybersecurity acquisitions on record.
Professional background
Rappaport holds a bachelor’s degree in computer science, physics, and mathematics from the Hebrew University of Jerusalem and a master’s degree in computer science from the Technion – Israel Institute of Technology. He served as a captain in the Israel Defense Forces’ 8200 intelligence unit, an assignment widely associated with Israel’s cybersecurity founder community, and briefly worked at McKinsey & Company before co-founding Adallom, a cloud access security broker, in 2012 with the same three colleagues — Ami Luttwak, Yinon Costica, and Roy Reznik — who would later join him at Wiz. Microsoft acquired Adallom for a reported $250 to $320 million in 2015, after which Rappaport became head of Microsoft’s Israel Research and Development Center and led Microsoft’s Cloud Security group.
Company-building context
Rappaport left Microsoft in December 2019 to start a new company, and Luttwak, Reznik, and Costica joined him in early 2020 to found Wiz. Wiz’s platform analyzes cloud infrastructure across AWS, Azure, Google Cloud, Oracle Cloud, and Kubernetes to identify combinations of misconfigurations, vulnerabilities, and identity risk that could let an attacker compromise cloud resources, an agentless approach that helped define the cloud-native application protection platform, or CNAPP, category. Rappaport served as CEO throughout, with Luttwak as chief technology officer, Costica leading product, and Reznik leading research and development, mirroring the roles the same four had held at Adallom.
Public milestones
Alphabet announced its intent to acquire Wiz in March 2025 for approximately $32 billion, which would be the largest acquisition of an Israeli technology company on record; the deal closed in March 2026 and Wiz became part of Google Cloud. Rappaport has stated publicly that Wiz will continue to support all major cloud and code environments rather than narrowing exclusively to Google Cloud, positioning the acquisition as an expansion of resources rather than a change in Wiz’s multi-cloud approach.
Why their work matters
Wiz helped define the CNAPP category by demonstrating that agentless, graph-based risk analysis could outperform older agent-heavy cloud security tools, and Rappaport’s track record of building and selling two cybersecurity companies to major technology platforms — Adallom to Microsoft and Wiz to Google — gives him a distinctive vantage point on how large cloud providers absorb and integrate acquired security technology, and on how founding teams can repeat a playbook across successive companies.
Sources and references
This profile is sourced from Wiz’s own author biography for Rappaport, Google Cloud’s official press release confirming the completed acquisition, and Wikipedia’s biographical entry for corroborating dates. The acquisition figure cited here matches multiple contemporaneous public reports and Alphabet’s own announcement, and the Adallom acquisition price is presented as a range to reflect differing figures reported at the time.