Three rounds closed in a single session, all funding the same problem from different angles. Onyx Security raised a $113 million Series B led by Bessemer for a platform that lets enterprises deploy AI agents securely, taking total funding to $153 million. Groundcover raised a $100 million Series C led by One Peak for observability software capable of monitoring AI agents, bringing its total to $160 million. Spur Intelligence raised $200 million led by Insight Partners for technology that distinguishes human from bot traffic to identify fake users and threats.