Krux
March 7, 2026
Palo Alto Networks Founder Raises $45M Seed for AI Cybersecurity
Published: March 7, 2026 at 12:29 AM
Updated: March 7, 2026 at 12:29 AM
100-word summary
Cylake landed $45 million from Greylock to build cybersecurity software that runs entirely inside customer data centers. The bet: banks and governments want AI-powered threat detection but refuse to send logs to someone else's cloud. Founder Nir Zuk created Palo Alto Networks, now worth $130 billion. His co-founder Udi Shamir built SentinelOne. They're building for organizations where sharing security data with a vendor violates regulations or internal policy. The platform won't ship until early 2027. That's a long runway for a seed round, but Greylock is betting data residency rules will only tighten as AI becomes standard in security operations.
What happened
Cylake landed $45 million from Greylock to build cybersecurity software that runs entirely inside customer data centers. The bet: banks and governments want AI-powered threat detection but refuse to send logs to someone else's cloud. Founder Nir Zuk created Palo Alto Networks, now worth $130 billion. His co-founder Udi Shamir built SentinelOne. They're building for organizations where sharing security data with a vendor violates regulations or internal policy.
Why it matters
The platform won't ship until early 2027. That's a long runway for a seed round, but Greylock is betting data residency rules will only tighten as AI becomes standard in security operations.