Cybersecurity Funding Cylake Raises $45 Million to Secure Organizations Barred From Cloud The company, founded by Palo Alto Networks’ Nir Zuk, has developed a platform that focuses on data sovereignty. By Eduard Kovacs | March 10, 2026 (3:10 AM ET) Flipboard Reddit Whatsapp Whatsapp Email Cybersecurity startup Cylake announced its launch last week, raising $45 million in seed funding for a platform designed for highly regulated organizations that cannot use public cloud services. Greylock Partners led the seed funding round, which will enable Cylake to complete development of its platform, expected to become generally available in early 2027. Cylake was co-founded by Nir Zuk (CEO), Wilson Xu (chief development officer), and Ehud (Udi) Shamir (chief architect). Zuk is a founder of Palo Alto Networks, serving as the company’s CTO for more than two decades. Shamir co-founded SentinelOne in 2013 and also worked at Palo Alto Networks, as distinguished software developer and security researcher. Xu served as engineering VP at Palo Alto Networks for more than a decade. They are also joined by René Bonvanie, previously CMO of Palo Alto Networks. Little information is available about the Cylake platform, but the company says it’s designed to provide AI-native, data-driven protection with a focus on data and operational sovereignty. The platform is advertised as ideal for companies barred from using the public cloud for security and regulatory reasons. Cylake’s platform is designed to operate fully on-premises or in a private cloud. Advertisement. Scroll to continue reading. “Many modern security platforms assume you can depend on public cloud infrastructure and services to process and analyze security data. The cloud has been a real benefit for cybersecurity advances. But for some institutions today, that assumption no longer holds: data sovereignty and operational control are requirements, not preferences,” explained Zuk. “That scenario changes everything. You need AI-native cybersecurity that works at scale, on complete data, under your control, and without adding yet another layer of fragmentation,” Zuk added. Related : ArmorCode Raises $16 Million for Exposure Management Platform Related : Data Security Firm Evervault Raises $25 Million in Series B Funding Related : Reclaim Security Raises $20 Million to Accelerate Remediation Written By Eduard Kovacs Eduard Kovacs (@EduardKovacs) is senior managing editor at SecurityWeek. He worked as a high school IT teacher before starting a career in journalism in 2011. Eduard holds a bachelor’s degree in industrial informatics and a master’s degree in computer techniques applied in electrical engineering. 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