Roy Reznik is an Israeli entrepreneur and cybersecurity expert, co-founder and CTO of Wiz, Inc. (founded January 2020) and previously co-founder and CTO of Adallom (founded 2012, acquired by Microsoft in 2015 for a reported $320 million). He has expertise in cloud security and a background in Israel's elite Unit 8200 cyber intelligence unit, where he served during mandatory military service alongside his future business partners Assaf Rappaport, Yinon Costica, and Ami Luttwak. Following the Adallom acquisition, he worked at Microsoft on cloud security initiatives. Under his leadership at Wiz, the company grew rapidly to become a cybersecurity unicorn valued at over $10 billion by 2024, with a platform that scans cloud infrastructures across AWS, Azure, and Google Cloud for security risks. Wiz maintains headquarters in New York City while retaining strong ties to Israel's tech ecosystem. Reznik's career highlights the influence of Israeli military alumni in global cybersecurity, including involvement in high-profile deals such as Wiz's near-acquisition by Google in 2024 for $23 billion.