Cylake Raises $45M Seed for Sovereign Cybersecurity
Cylake, an Israel-based AI-native cybersecurity platform, has raised $45M in seed funding led by Greylock Partners. The end-to-end system integrates hardware and software on a single sovereign data foundation for on-premises or private cloud deployment. This ensures full data sovereignty for regulated industries like government and defense. The capital will fund development with select design partners, targeting commercial availability in early 2027.
AI Cyber Seed Deals Surge 53%
The funding arrives amid a cybersecurity funding boom, with U.S. seed investments up 53% in Q1 2026. JetStream raised $34M in seed funding on March 4, 2026, for AI asset visibility. Cylake's larger $45M round reflects investor appetite for sovereign solutions countering AI-driven threats. Greylock's lead signals conviction in on-premises architectures amid cloud dominance.
Cloud Pivot Leaves 1/3 Behind
The cybersecurity industry has shifted heavily to public cloud platforms, stranding regulated sectors unable to relocate sensitive data. Government, defense, and critical infrastructure organizations represent about one-third of the market but lag 20 years in protection levels. Public cloud dependencies expose data to residency risks and AI attack vectors. Existing tools fragment visibility across networks, endpoints, and workloads.
Unified Data Lakehouse Enables AI
Cylake builds a complete platform aggregating telemetry from all sources into a sovereign data lakehouse. AI agents perform real-time analysis and response without external dependencies. Unlike Cyera's multi-cloud data security ($1.7B raised), Cylake mandates on-premises hardware for total control. Vectra AI ($425M raised) focuses on network detection, while Cylake spans the full stack.
As Nir Zuk, founder and CEO, explained in Business Insider:
"The industry has overrotated toward delivering everything in the cloud, and that has left many of the most important customers stuck 20 years behind."
Hardware Integration Secures Sovereignty
Cylake's hardware-software combo processes data locally, enabling agentic workflows for proactive defense. This addresses geopolitical tensions and regulations like the EU AI Act and U.S. CMMC. Competitors like Corelight ($310M raised) emphasize network telemetry appliances but lack Cylake's holistic AI foundation.
As Asheem Chandna, Greylock partner, noted:
"The next generation of cybersecurity will be AI-native, agentic and built on holistic data and context."
Greylock Doubles Down on Zuk
Greylock Partners, leading the round, repeats its early bet on Nir Zuk from Palo Alto Networks' seed. Partner Asheem Chandna, who backed PANW (now S&P 500), sees Cylake filling the sovereign gap. The firm's portfolio includes cyber unicorns like Wiz ($12B valuation) and Abnormal Security. This tier-1 validation underscores growth capital for AI cyber sovereignty.
On-Prem Dominates Regulated Spend
The global cybersecurity market stands at $248B in 2026, projected to reach $699B by 2034 at 13.8% CAGR. AI cybersecurity grows faster from $44B to $213B by 2034 at 21.7% CAGR. On-premises solutions hold 59% market share, driven by data localization mandates. Cylake targets this underserved segment against cloud natives like CrowdStrike and Palo Alto Networks.
PANW Founder Drives Revival
Nir Zuk founded Palo Alto Networks, pioneering next-gen firewalls en route to IPO. Co-founders Wilson Xu (ex-PANW) and Udi Shamir (SentinelOne co-founder) bring execution expertise. Their track record includes building multi-billion outcomes in endpoint and network security. Zuk's contrarian on-premises pivot mirrors his original cloud innovation at PANW.
Design Partners Test 2027 Launch
Cylake is developing with a select group of design partners in regulated sectors. Product availability is slated for early 2027. The focus remains on governments, defense contractors, and critical infrastructure needing unbreakable sovereignty.