As AI agents gain access to the same sensitive corporate data and systems as human workers while operating at machine speed, enterprises are prone to new security risks. Storied venture firm Sequoia Capital is betting big on that shift, backing startup Cymphony as it emerges with $30 million in funding to help companies keep their growing AI workforce in check. The funding includes a $25 million Series A co-led by Sequoia and SMBC Fin Atlas Beyond Fund, valuing the New York- and Tel Aviv-based startup at more than $100 million after investment.
The round follows a previously undisclosed seed investment from Sequoia. AI agents do not necessarily go through the same access and identity controls as employees, but they have access to multiple systems and handle large amounts of corporate data. This makes it hard for enterprises to track who has access to what.
Cymphony is trying to address that gap by giving security teams a single view of employees, AI agents, and other non-human identities, including the systems and sensitive data they can access. At the core of its platform, the two-year-old startup has built what it calls a “workforce graph”. This brings together identity, data, and activity signals.
At one U.S. public company, the startup said it found about 85,000 files that had become accessible to AI tools and agents. Cymphony stated it helped close the exposure and verified that none of the files had been accessed through those AI systems. In another case, Dekel told TechCrunch that an external collaborator had installed an unsanctioned instance of Anthropic’s Claude that used the collaborator’s existing access to scan thousands of sensitive files.
Beyond identifying risks, Cymphony uses AI agents to investigate incidents, prioritize what security teams should address, and automate some remediation, including correcting access permissions. The platform can operate largely automatically, Dekel said, adding that customers can also opt for a managed service that brings Cymphony’s security experts into the loop for more complex cases. Sequoia’s initial bet on Cymphony came before the startup had settled on the problem it wanted to solve.
When the venture firm led its seed round more than two years ago, Cymphony had no product or even a clear product direction, Sequoia partner Bogomil Balkansky told TechCrunch. The investment was largely a bet on Dekel and his co-founders, Idan Berkovits (pictured above, right) and Edi Gotlieb (pictured above, left), all three of whom came through Talpiot, the Israeli military’s highly selective technology and leadership program. Sequoia was already familiar with the program through previous cybersecurity investments, including Wiz.
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