SquareX

What the company sells

SquareX sells a browser extension that adds Browser Detection and Response, enterprise browser controls and browser-based data loss prevention to any existing browser, so it detects and threat-hunts client-side web attacks against employees in real time. It is owned by Zscaler, which completed its acquisition in 2026.

Categories

• Browser protection extensions (primary category)
• Data loss prevention

Headquarters

Not established from our sources

Founded

Not established from our sources

Ownership

Owned by Zscaler since 2026

Website

sqrx.com

Products and services

• Browser Detection and Response (BDR)

  Detects, mitigates and threat-hunts client-side web attacks against employees in real time.

• SquareX Browser Extension (Enterprise Browser)

  Installs as an extension that turns any browser on any device into an enterprise-grade secure browser.

• Browser DLP

  Applies data loss prevention controls inside the browser to secure any browser on any device.

Sources

1. SquareX via PR NewswirePublished July 31, 2025 · Tier A: the company, a regulator or a filing
2. SquareXUndated page, accessed September 27, 2026 · Tier A: the company, a regulator or a filing
3. ZscalerPublished February 5, 2026 · Tier A: the company, a regulator or a filing

Recorded September 27, 2026 from the sources above. Descriptions are in our own words; we do not rank or recommend vendors, and no vendor pays to be listed or to change what we write. Disclosure: until the publisher confirms it has no business relationship with this company, treat one as possible (how the network works). Spot a factual error? Request a correction.