SquareX
Acquired Subsidiary
SquareX provides a browser detection and response security platform for enterprise users.
Founded
2023SquareX provides a browser detection and response security platform for enterprise users.
SquareX's core offering is a Browser Detection and Response solution delivered as a browser extension that integrates with users' existing consumer browsers. It detects, mitigates, and threat-hunts client-side web attacks in real time without requiring a dedicated enterprise browser.
The product uses cloud-powered disposable browser sandboxes to isolate suspicious links and files, neutralizing web threats before they reach the endpoint. It also protects user identity and monitors malicious extensions, session hijacking, and browser-native phishing.
Browser-native security is an emerging category as enterprises shift work to browsers and attackers target extensions, identity, and client-side web activity. SquareX helped define the Browser Detection and Response segment alongside broader browser isolation and secure browser markets.
The category faces competition from established secure web gateway, browser isolation, and zero-trust vendors. SquareX's acquisition by Zscaler reflects consolidation of browser security capabilities into larger cloud security platforms.
SquareX integrates directly into users' existing consumer browsers as an extension rather than requiring a separate enterprise browser, reducing friction and deployment cost. This browser-native approach secures managed and unmanaged devices without a full agent or virtual desktop infrastructure.
The company's research-led positioning has produced original threat research on browser and extension vulnerabilities, strengthening its credibility with security buyers. Its disposable-browser isolation model aims for deterministic threat neutralization rather than probabilistic detection.