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

image via TechCrunch

September 9, 2026, 1:00 PM

• •Cymphony emerged with $30 million in funding, including a $25 million Series A co-led by Sequoia and SMBC Fin Atlas Beyond Fund, at a valuation above $100 million.
• •The startup aims to help enterprises monitor employees, AI agents, and other non-human identities through a unified "workforce graph" that combines identity, data, and activity signals.
• •Cymphony says it found about 85,000 files at one U.S. public company that had become accessible to AI tools and agents.
• •The company says it already has a double-digit number of enterprise customers and reached seven figures in annual recurring revenue within its first year of sales.
• •Named customers include KKR, Syngenta, Cass Information Systems, and Athennian.
• •Cymphony competes with or complements established security vendors including Microsoft, Okta, CyberArk, Wiz, and Varonis.

Cymphony has raised $30 million to help enterprises manage security risks created by AI agents and other non-human identities. Its platform gives security teams a unified view of who or what can access systems and sensitive data, and it can also investigate incidents and automate some remediation. Sequoia, which first backed the company before it had a defined product, joined SMBC Fin Atlas Beyond Fund to co-lead a $25 million Series A that values the startup at more than $100 million. The company says it already serves enterprise customers including KKR and Syngenta as businesses look for new ways to govern rapidly expanding AI access inside organizations.

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