Palo Alto Networks Completes $400M Acquisition of Israeli AI Cybersecurity Startup Koi to Strengthen Endpoint Security

Palo Alto Networks has finalized its acquisition of Tel Aviv-based Koi Security in a landmark deal estimated at $400 million.

The one-year-old Israeli startup, founded by alumni of the elite Unit 8200, brings cutting-edge technology to combat emerging AI-driven threats.

Koi's Breakthrough in Agentic Endpoint Security

Koi pioneered Agentic Endpoint Security (AES), a new category focused on protecting enterprises from autonomous AI agents operating within systems.

Its AI-powered Supply Chain Gateway scans and blocks malicious code before it infiltrates networks, safeguarding over 500,000 endpoints globally for Fortune 50 firms and financial institutions.

Prior to the acquisition, Koi had raised $48 million from investors including Battery Ventures, achieving an impressive eight-fold return.

Strategic Impact on Palo Alto's Portfolio

This deal marks another aggressive move in Palo Alto Networks' 2025-2026 acquisition spree, following massive purchases like CyberArk for $25 billion and others totaling billions.

The integration will enhance Palo Alto's platform access (PA), providing unified visibility and control over AI-native ecosystems.

Industry experts hail the acquisition as a preemptive strike against evolving cyber risks in an AI-dominated landscape.

Future of Cybersecurity Innovation

Post-acquisition, Koi's technology will accelerate Palo Alto's mission to secure modern workforces amid rising autonomous agent deployments.

The move underscores Israel's dominance in cybersecurity, with Koi exemplifying rapid innovation from startup to global acquisition.

Enterprises can expect bolstered defenses, potentially setting new standards for endpoint protection in the agentic era.