Cylake
Cylake provides an AI-native cybersecurity platform for air-gapped sovereign environments.
- Categories
- SIEM, EDR and XDR
- Based in
- Sunnyvale, United States
- Founded
- 2026
- Ownership
- Private
About Cylake
Cylake sells a cybersecurity platform that runs entirely on customer premises. It is aimed at organisations that cannot use cloud services, such as governments, banks, and critical infrastructure operators. The platform is delivered as appliances that customers rack and power themselves. It combines hardware, software, and AI in one system. The platform ingests all security data into a single lake without sampling. Every security function works from that same data, covering endpoint, browser, cloud, SaaS, data, OT and IoT, and AI. Detection runs in the ingestion pipeline. Investigations use hot storage for fast answers. AI runs on the customer's own hardware and reads the complete data lake, so sensitive data never leaves the environment. Capacity grows by adding more units, and updates arrive without manual effort. Cylake was founded in 2026 by Nir Zuk, Udi Shamir, and Wilson Xu. It is based in Sunnyvale, California, and backed by investors including Greylock and IQT.
Products
- Central ServerHandles investigation and response workflows, policy, AI visualisation, and platform management.
- Compute ServerPerforms data ingestion, enrichment, normalisation, and stateless, stateful, and behavioural detections.
- Hot StorageProvides NVMe storage for rapid investigation workflows.
- Warm StorageOffers high-density HDD storage for long-term retention.
Ownership and deals
- Raised $245m through a convertible noteInvestors Lightspeed Venture Partners, Picture Capital and RedpointReport on the Cylake funding round of September 2026 (opens in a new tab)
- Raised $45m in a seed roundInvestor GreylockReport on the Cylake funding round of March 2026 (opens in a new tab)
Acquisitions come from SecurityWeek's monthly M&A round-ups from 2021 onwards, from Cybersecurity Ventures' quarterly M&A reports for 2020, and a few from Wikipedia lists. Funding rounds from 2022 onwards come from Return on Security's weekly Security, Funded newsletter. These are dated to the month. A few deals added from the news are dated to the day. Smaller deals may be missing. Amounts are in US dollars.