Bay Emerges From Stealth With $50 Million for AI-Agent Security

Tel Aviv-based Bay emerged from stealth on November 10 with $50 million in financing and an enterprise platform designed to control the actions of autonomous AI agents. The company announced a $37 million Series A led by Battery Ventures, alongside 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. Founded in 2026, Bay is led by co-founder and CEO Yuval Zacharia, chief product officer Aner Morag and vice president of research and development Boris Danilovich. Zacharia said: "Either way, the challenge is the same: enabling AI adoption at scale without losing control." Bay says its software assesses an agent's proposed action in the context of its full session, deciding locally within milliseconds whether it can proceed. The platform applies controls across employee devices, cloud infrastructure and software-as-a-service applications, supporting different AI models and agent frameworks. Bay says it has dozens of enterprise customers, including Micron, Peloton, ClickUp and Wix. Battery Ventures general partner Dharmesh Thakker cited Bay's technical approach and early customer adoption in explaining the investment. The company says its product is already available to enterprises. It plans to use the funding to expand product and engineering teams and build sales, marketing and customer teams in the United States and Europe.