AIR

AIR is an Israeli cybersecurity company building a real-time firewall purpose-built for AI agents, capable of discovering which agents are running inside a company, continuously vetting their skills and plugins, and blocking anything that looks like trouble. The product sits inline with an agent's runtime and focuses on what enters the agent's context window, screening skills, plugins, and MCP servers before untrusted instructions or compromised tools can steer the agent toward data theft, fraud, or unauthorized access. It is aimed at enterprise security teams that are moving from AI experimentation to production deployments and need visibility into which agents exist, what they can reach, and how third-party add-ons are influencing their decisions. The launch matters now because agent adoption is outrunning the controls around it. AIR's own research found over 17,800 public AI add-ons linked to untrusted external sources, collectively accounting for roughly 6.7 million installations , and the company identified cases of brand impersonation where AI skills masqueraded as products from well-known companies like Anthropic and OpenAI . Alongside the runtime firewall, AIR plans to offer a marketplace of pre-vetted, certified add-ons, essentially creating a curated app store for AI agent capabilities . AIR was founded in February 2026 by Yair Saban and Niv Hoffman, who met about a decade ago in the Israeli military and share backgrounds in offensive cybersecurity, enterprise infrastructure, and AI security research. Ryan Knisley, previously Chief Information Security Officer at The Walt Disney Company and Costco Wholesale, joined as Chief Strategy Officer. The company is emerging from stealth with a $50M round led by Sequoia Capital and Greenoaks, with participation from Swish Ventures, Netz, and angels including Yinon Costica of Wiz, Ofir Ehrlich of Eon, Varun Anand of Clay, Zach Frankel of Cognition, and Anne Neuberger.