Capital One Ventures led the Series C as the cybersecurity company moves beyond cloud data discovery into governing autonomous agents and their access to sensitive information.
Sentra has raised $150 million in a Series C investment led by Capital One Ventures, bringing the New York- and Tel Aviv-based cybersecurity company's total financing to more than $250 million.
Existing investors Bessemer Venture Partners, Zeev Ventures, Standard Investments, Munich Re Ventures and Key1 Capital also participated. Capital One Ventures will receive a board seat. The financing, announced November 4, comes as businesses give AI agents increasing access to internal data, applications and business processes.
Sentra's platform maps an organization's data estate, identifies sensitive information and discovers excessive permissions, unnecessary copies and other exposure risks. The company is extending those capabilities to understand what AI systems and agents can actually reach, and whether their access is appropriate.
The Problem Is No Longer Just Where Data Lives
A company can classify a confidential customer database yet still expose it if an employee-created agent inherits overly broad permissions. Traditional cybersecurity controls often focus on devices, users and cloud infrastructure. AI agents add a new layer: software acting with delegated authority, sometimes across several services.
Sentra aims to give security and compliance teams a continuously updated picture of that access and the data behind it. Its products cover data security posture management, detection and response, and access governance. The commercial proposition is to make existing data safer before companies accelerate AI deployments.
The startup was founded in 2021 by CEO Yoav Regev, president Asaf Kochan, CTO Ron Reiter and product executive Yair Cohen. Regev and Kochan previously served in senior positions in Israel's Unit 8200 intelligence organization.
Sentra says its business grew more than 300% over the past year and employs approximately 130 people. It has not disclosed revenue, profitability or an officially confirmed valuation for the new round.
The Next Test Is Agent Governance
Large enterprises will need to demonstrate not simply that AI improves productivity, but that agents do not expose privileged material or take action outside approved boundaries. Sentra's opportunity is to become part of that governance layer.
The challenge is that the agent-security category is still evolving. Access changes quickly, data moves between services and compliance teams require auditable controls. The capital gives Sentra resources to expand internationally and develop its platform, but the next proof point is whether it can enforce reliable controls at the speed with which enterprises deploy AI agents.