Pluto Security raises $42M to secure enterprise AI agents

Pluto Security has raised $42 million just as it emerges from stealth, the latest sign that enterprises are scrambling to contain the security risks created by widespread AI tool adoption. CEO and co-founder Shahar Bahat told TechCrunch that a newly announced AI tool can show up inside a company’s environment within a mere two hours of its release — and that about 60% of the risks her company detects across its customer base come from tools vibe-coded by non-developers. Finance departments are the biggest source of such risk, she said, followed by marketing and legal teams, with developers ranking fourth.

Pluto’s tools have already found a vibe-coded app, built by a finance employee at a Fortune 500 company to manage customer information and churn, that was left exposed to the internet. The startup is one of a new crop of security companies that have sprung up to help companies close the gaps left by using existing security software to monitor AI tools, connectors, and usage — an approach Pluto argues is a poor fit for the problem.

Pluto’s $42 million includes an $8.5 million seed round led by TLV Partners, with the founders of cybersecurity firm Armis also investing, plus a $34 million Series A led by Jump Capital, with participation from Skinos (the venture firm of Check Point co-founder Shlomo Kramer), Ansa Capital, and other angel investors. Bahat said Pluto began selling in April and has already crossed $2 million in annual recurring revenue with more than 30 enterprise customers, including Oscar Health, Workato, Sixt, and AlphaSense; about 70% of its sales pipeline now comes from inbound interest.

Pluto’s software monitors the AI tools employees use — including the skills, extensions, and MCP servers those tools rely on — as well as the apps and agents being created, connecting to endpoint security and device management systems to deploy its own sensors. “We’re moving from user behavior to agent behavior,” Bahat said. The company also runs Plutonium, a free platform launched in April that lets anyone check the risks of publicly available AI skills, connectors, and add-ons, which Bahat says has become a source of both feedback and prospective customers. Pluto plans to use the new funding to develop its product, expand security research, and grow its presence in the U.S., where it employs 40 people alongside its Israel team.

Why it matters

If Pluto’s traction holds, enterprise security budgets look set to keep shifting from policing human logins toward policing what AI agents themselves are allowed to do.