AI security startup AIR secures $50 million to monitor enterprise agent supply chains

AI-security company AIR announced a total seed raise of $50 million—$10 million from Sequoia and $40 million from Greenoaks—completed within weeks of each other. The firm was founded by Yair Saban (CEO) and Niv Hoffman (CTO), veterans of Israel’s Unit 8200 intelligence corps, to address the emerging software supply chain that supports AI agents, encompassing skills, plugins, MCP servers and other add-ons. AIR’s platform can locate active agents across an organization, continuously vet the code and data they consume, and enforce a whitelist that blocks unsafe components, while also providing a curated marketplace of approved tools.

The company says it filters out roughly 27 percent of discovered add-ons and currently serves over 20 clients, with strong demand from financial services and pharmaceutical firms. Competitors such as Noma Security, Zenity, Astrix Security and Operant AI target the same space, but AIR claims its continuous re-verification creates a defensible moat. The new funding will be used to hire more researchers and expand go-to-market efforts in the United States and Europe.