PALO Alto Networks announced on 18 February 2026 that it has entered into a definitive agreement to acquire endpoint security company Koi, with financial details not disclosed by the firms but reportedly valued at $400 million according to Calcalist and Globes. Koi offers an endpoint security platform focused on protecting software across applications, code, operating system packages, extensions, AI models, AI agents and containers, and includes tools for automatic discovery and inventory across IT setups.
Palo Alto said it is buying Koi for its agentic endpoint security technology to enhance its Prisma AIRS AI security platform and Cortex XDR endpoint security solution, providing significant visibility into the AI attack surface to improve security policy and malware prevention. The company’s chief product and technology officer, Lee Klarich, described the move as closing a gap by ensuring every agent, plugin and script is governed, verified and secure. SecurityWeek noted that Koi has been in the news for analyses of attacks and vulnerabilities affecting software developers. Written by Eduard Kovacs.