SquareX develops Browser Detection and Response (BDR) delivered through a lightweight browser extension that converts any browser into an enterprise-grade secure browser. Its product provides visibility and control directly in the native browser to detect, mitigate, and threat-hunt client-side web attacks. The solution protects against malicious browser extensions, advanced spearphishing, browser-native ransomware, genAI data leakage, insider threats, and other browser-focused attacks while aiming to preserve user experience. SquareX positions its extension as an alternative to proprietary enterprise browsers that can introduce friction and hinder adoption, enabling enterprises to reduce their attack surface without cumbersome change management. The company emphasizes enterprise deployments and visibility into browser threats as core go-to-market priorities. SquareX announced it closed a $20 million Series A in April 2025, signaling investor validation as it scales. SquareX is a Singapore-based cybersecurity startup that offers disposable browsers via a browser extension; sessions run as headless browsers in SquareX’s data centers so threats never reach users’ machines. Its disposable environments act as temporary container sandboxes that can be destroyed at any time, leaving no retained data and allowing anonymous browsing. The product is positioned as an alternative to VPNs, antivirus, anti-malware and other endpoint security solutions that can be disabled by users. SquareX does not block access to files or links; instead it opens them in isolated sessions so users can view potentially malicious content without exposing their devices or personal information. Founder Vivek Ramachandran previously built Pentester Academy, which was acquired by INE in 2021. The company plans go-to-market efforts focused on the United States, the United Kingdom and Asia.

Total raised

$26M

Funding rounds

2

Latest round

Series A

Latest activity

Apr 2025