Sequoia doubles down on Cymphony as AI agents create new enterprise security risks
Sequoia Capital led additional investment in Cymphony as the startup raised $30 million to help enterprises manage security risks introduced by AI agents. The New York- and Tel Aviv-based company secured a $25 million Series A co-led by Sequoia and SMBC Fin Atlas Beyond Fund, valuing it at more than $100 million after the round.
Why It Matters
As AI agents gain access to corporate systems and data at machine speed, traditional security and identity controls struggle to track non-human actors — a gap Cymphony aims to close by unifying identity, data, and activity signals. The funding reflects investor conviction that agent-driven risks will require new tools layered onto existing enterprise security stacks.
Key Facts
- Total new funding: $30 million
- Series A: $25 million co-led by Sequoia and SMBC Fin Atlas Beyond Fund
- Post-money valuation: More than $100 million
- Headquarters: New York and Tel Aviv
- Company age: Two years
Sequoia Capital has increased its backing of Cymphony as the startup raises $30 million to tackle emerging enterprise security risks tied to AI agents. The round includes a $25 million Series A co-led by Sequoia and SMBC Fin Atlas Beyond Fund and values the two-year-old, New York- and Tel Aviv-based company at north of $100 million. Sequoia had also participated in an earlier, previously undisclosed seed investment.
Cymphony’s core product centers on what it calls a “workforce graph,” which aggregates identity, data, and activity signals to give security teams a single view of human and non-human identities. The startup argues that many AI agents bypass traditional access and identity controls while touching multiple systems and large volumes of corporate data, creating blind spots for enterprises.
The company says it has already found substantial exposures at customers — for example, one U.S. public company had about 85,000 files that were accessible to AI tools and agents, which Cymphony helped close and verified were not accessed. The startup also reported a case where an external collaborator ran an unsanctioned instance of Anthropic’s Claude using existing access to scan thousands of sensitive files. Beyond discovery, Cymphony applies AI agents to investigate incidents, prioritize remediation, and automate fixes such as correcting access permissions, and it offers a managed service for complex cases.
Sequoia’s renewed investment reflected both confidence in Cymphony’s founders and the product’s early traction. The startup reached seven figures in annual recurring revenue in its first year of sales and signed a double-digit number of enterprise customers, including KKR, Syngenta, Cass Information Systems, and Athennian. Sequoia partner Bogomil Balkansky said the firm had been familiar with the founders’ Talpiot background from prior cybersecurity deals and that Sequoia has used Cymphony’s product internally as it evaluated the company’s progress. Cymphony now competes in a crowded market alongside established security vendors expanding into identity, data, and AI risk, including Microsoft, Okta, CyberArk, Wiz, and Varonis.
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