Bay Raises $50 Million to Expand Its AI Agent Security Platform

Israeli cybersecurity startup Bay has emerged from stealth with $50 million in funding to expand software that checks AI agents’ proposed actions before they run, giving companies a way to review activity even when an agent has legitimate access. The funding includes a $37 million Series A led by Battery Ventures and a previously undisclosed $13 million seed round led by YL Ventures and Striker. Micron Ventures, M12, Microsoft’s venture fund, and Wiz CEO Assaf Rappaport also participated in the Series A. Bay announced its launch and funding on Nov. 10. Bay’s platform evaluates each proposed action in the context of the agent’s full session, including its task and prior activity, then returns a local decision within milliseconds.

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