Sequoia doubles down on Cymphony as AI agents create new enterprise security risks

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.