Cogent Security has raised $42 million in a Series A round led by Bain Capital Ventures, with participation from Greylock Partners and Definition. The financing brings total funding to $53 million, just six months after the company's launch in July 2025. The San Francisco-based startup deploys AI agents to automate cybersecurity remediation, addressing the growing gap between vulnerability discovery and fixing. Whilst attackers using AI can exploit new vulnerabilities within minutes, traditional security teams take days or weeks to coordinate fixes manually. Cogent's platform investigates vulnerabilities, determines system ownership, assesses risk and generates remediation steps, tracking fixes through to completion. Customers have reduced exposure windows for critical risks by an average of 97%. Founded by former executives from Abnormal Security and Coinbase, Cogent is already working with dozens of Fortune 1000 companies.

Cogent Security, a San Francisco, CA-based provider of an AI taskforce for vulnerability management, raised $11M in funding.