Sequoia backs Cymphony with $30 million to tackle AI-agent security threats
Cymphony secured $30 million in a Series A round led by Sequoia Capital to help enterprises monitor and control AI agents that can access sensitive corporate data.
Sequoia Capital doubled down on Cymphony, providing $30 million in a Series A round co-led with SMBC Fin Atlas Beyond Fund, pushing the startup’s valuation past $100 million. Cymphony, founded by Shy Dekel, Idan Berkovits and Edi Gotlieb, offers a "workforce graph" that aggregates identity, data and activity signals to give security teams visibility over human users, AI agents and other non-human identities. The platform has uncovered exposures such as 85,000 files accessible to AI tools at a U.S. public company and an unsanctioned Anthropic Claude instance scanning thousands of sensitive documents.
Beyond detection, Cymphony employs its own AI agents to prioritize incidents, automate remediation and optionally provide managed security services. Sequoia’s renewed investment reflects confidence in the founders’ pedigree, early revenue, and growing client list that includes KKR, Syngenta, Cass Information Systems and Athennian. The startup enters a crowded market as major vendors like Microsoft, Okta and CyberArk expand into AI-agent security, but Cymphony aims to complement rather than replace existing identity solutions.
Why it matters
Enterprises need tools to manage AI agents that can bypass traditional security controls and expose sensitive data.
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