Airgap

Airgap Networks was a cybersecurity company specializing in agentless microsegmentation for enterprise IT, OT, and IoT environments. Its platform used an intelligent DHCP proxy architecture to automatically isolate every device into a segment of one, enforcing zero trust access policies without requiring agents, API integrations, or infrastructure upgrades. Key capabilities included a ransomware kill switch that halts lateral movement by disabling non-essential device communications, real-time device discovery and inline enforcement, and zero trust firewall functionality. Airgap's agentless approach was particularly suited for unmanaged devices, legacy OT systems, and headless IoT infrastructure where traditional agent deployment is impossible. Founded in 2019 in Santa Clara, California, Airgap raised $23M from Storm Ventures, Cervin, Engineering Capital, and Sorenson Ventures, before being acquired by Zscaler in April 2024 to extend Zscaler's Zero Trust SASE platform.