Zscaler acquires SquareX

Today, we’re thrilled to share a defining milestone in SquareX’s journey: Zscaler, the leader in Zero Trust has acquired SquareX. Joining Zscaler marks the next chapter in our mission to transform how enterprises secure the place where modern work truly happens—the browser. As part of Zscaler, we will bring our vision of secure, seamless, and fearless browsing to thousands more enterprises worldwide.

We founded SquareX on a simple notion: the browser has become the primary way employees get work done—and a prime target for attackers. Even with strong secure web gateways, there was still a gap as to what was happening inside the browser. We saw an opportunity to add real-time threat detection and response directly into the browser, making SquareX’s in-browser protection a powerful additional layer of defense. Our Browser Detection and Response (BDR) capabilities, delivered via an extension, embeds browser detection and response to browser‑native threats, like malicious extensions or malicious scripts, giving security teams deep, actionable visibility while remaining virtually invisible to users.

We didn’t stop there. We also knew that today’s workforce demands the flexibility to work and access apps from any browser and device, including personal ones, making VPNs or VDI, non-starters. Our extension-based security was the perfect foundation to solve this need, and our vision expanded to both detecting browser-borne threats with BDR and also enabling least-privilege application access from the browser.

Since the browser is the primary way employees get work done, we built SquareX to be easy for both users and IT. By integrating seamlessly with any leading browser, Chrome, Edge, Firefox, and Safari, we avoid disruptive browser change management. Users keep their preferred browser, and IT does not have to manage yet another standalone tool.

We’ve always believed security should be powerful and unobtrusive, and Zscaler shares that philosophy. Zscaler’s Zero Trust Browser and Zero Trust Exchange make app access simple and secure, ensuring only the right user, on the right device, on any browser, reaches the right resource.

So what does the future hold for our technology? Our technology will integrate into the Zscaler platform and Zero Trust Browser to redefine browser security and app access on managed and unmanaged devices. On managed devices, our extension adds browser detection/response and feeds deep threat telemetry into Zscaler to stop browser-native threats. On BYOD and unmanaged devices, we’ll complement Zero Trust Browser app access with last-mile controls—making any browser a secure, VDI alternative with work profiles, browser DLP, device posture, and local data protection. Together, this delivers an unmatched balance of user experience, productivity, and security.

Announcements like this always raise questions for customers. For SquareX customers, our commitment to you does not change; it strengthens. You can expect continued innovation in our core capabilities, now backed by Zscaler’s scale, resources, and global footprint. Your existing deployments and investments will be protected, and over time you’ll benefit from tighter integration with Zscaler services, expanded analytics, and more robust, risk-based controls across managed and unmanaged devices—without asking your users to change how they work or which browser they use.

Looking ahead, we’re incredibly excited about what this next chapter unlocks. The future of work is browser-first and AI-powered, and the threat landscape will only grow more sophisticated. Together with Zscaler, we’re positioned to stay ahead of that curve—to anticipate how attackers will innovate and build defenses that keep them in check. Our vision remains unchanged: to let enterprise users be fearless online, confident that the security protecting them is powerful, proactive, and largely invisible.