Ex-Palo Alto Networks Founder’s Startup Cylake Raises $245 Million for Sovereign Security Platform

Cybersecurity startup Cylake has raised $245 million to accelerate development of its security platform, bringing its total funding to $290 million just six months after emerging from stealth.

A Platform for Organizations That Can’t Use the Public Cloud

Cylake is building what it describes as a complete, AI-native cybersecurity platform aimed at government agencies, highly regulated enterprises and other organizations that cannot depend on public cloud infrastructure. The platform is designed to run entirely on premises or in private cloud environments, giving customers control over their own data, infrastructure and security operations, and combining data and context from across an organization’s systems into a unified foundation for both protection and AI-powered security workflows.

The company said the new funding will go toward platform development and team expansion ahead of a beta release targeted for the end of 2026, with general availability planned for 2027.

A Team With Deep Palo Alto Networks Roots

Cylake was co-founded by chief executive Nir Zuk, who founded Palo Alto Networks and served as its chief technology officer for more than two decades; chief development officer Wilson Xu, a former Palo Alto Networks engineering executive; and chief architect Ehud “Udi” Shamir, who co-founded SentinelOne before working as a distinguished software developer and security researcher at Palo Alto Networks. The team also includes René Bonvanie, previously Palo Alto Networks’ chief marketing officer.

Cylake emerged from stealth in March 2026 with a $45 million seed round led by Greylock Partners and has since grown to more than 40 employees, with plans to continue hiring across engineering, product and other functions as it works toward its beta launch.

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