Pluto Security raises $42M as AI gives enterprise security teams a new headache

Pluto Security has closed a $42 million funding round, emerging from stealth with a fresh focus on securing AI tools inside enterprises. The round includes an $8.5 million seed led by TLV Partners and a $34 million Series A led by Jump Capital, with participation from Skinos, Ansa Capital and other angels.

The company, which began selling in April, already reports $2 million in annual recurring revenue and serves more than 30 enterprise customers such as Oscar Health, Workato, Sixt and AlphaSense. Bahat says AI tools can appear in a company’s environment within two hours of release, and about 60 % of the risks her team detects come from non‑developer “vibe‑coded” apps, with finance departments the biggest source.

Pluto’s software monitors AI tools, skills, extensions, MCP servers and the agents employees create, gathering prompts, commands, permissions and activity. It runs lightweight models on endpoints to assess risky behavior and can intervene in real time—stopping unauthorized permission requests or injecting context to prompt confirmation. The approach shifts focus from user behavior to agent behavior, aiming to give companies visibility and control without blocking AI use.

The startup also runs a free platform called Plutonium that lets security professionals scan public AI components; Bahat says 70 % of its