As AI agents gain access to sensitive corporate data, enterprises face new security risks. Venture firm Sequoia Capital is backing startup Cymphony, which aims to provide a single view of employees, AI agents, and non-human identities, helping companies track access to sensitive data.

The funding round 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 over $100 million after investment. Cymphony’s platform includes a workforce graph that brings together identity, data, and activity signals.

Sequoia’s initial bet on Cymphony came before the startup had settled on the problem it wanted to solve. The investment was largely a bet on Dekel and his co-founders, who came through Talpiot, the Israeli military’s highly selective technology and leadership program. Cymphony has since built a product, signed a double-digit number of enterprise customers, and reached seven figures in annual recurring revenue within its first year of sales.

Cymphony’s approach stands out by treating identity and data security as part of the same problem, as agents can take different routes to complete a task, acquire new capabilities, and in some cases, create other agents. This makes their access harder to govern with security systems designed around people.

While Cymphony is entering a crowded market, Sequoia sees it as a complementary tool, rather than a replacement for existing security products. The company is already replacing some existing security products at customers and is in a race against established security companies that are expanding their offerings around identity, data, and AI.