SquareX secures US$20 million to transform browser security

Business Mayor

27-04-2025

SquareX has announced the close of its Series A funding round, raising US$20 million. The investment was led by SYN Ventures, a venture capital firm specialising in cybersecurity, with continued support from Peak XV Partners, formerly known as Sequoia Capital SEA.
The Singapore-based company has pioneered Browser Detection and Response (BDR), a solution that strengthens security directly within the browser. Its approach eliminates the need for businesses to adopt entirely new enterprise browsers, which can often disrupt user experience and productivity. Instead, SquareX offers a simple extension that turns any browser into a secure, enterprise-grade tool.
Vivek Ramachandran, CEO of SquareX, said, 'The browser is the new endpoint, yet it remains a major blind spot for most organisations. Existing solutions often force a trade-off between security and usability. We built SquareX to eliminate this compromise in browser security, offering robust protection that works with the browsers users are already familiar with. This Series A funding, led by the team at SYN Ventures, validates our vision of everyone being able to be online without fear.'
As browsers have increasingly become primary targets for cyberattacks, the need for better security solutions has grown urgent. Traditional security tools often lack the ability to monitor threats at the browser level, and adopting proprietary enterprise browsers can create friction in daily workflows.
SquareX addresses these challenges with its BDR extension. It allows enterprises to detect and manage threats such as malicious extensions, phishing attempts, data leakage through generative AI, and insider threats. By operating within the native browser environment, SquareX significantly reduces the attack surface without compromising usability or requiring complex change management.
Jay Leek, Managing Partner and Founder of SYN Ventures, commented, 'SquareX is tackling one of the most significant and underserved areas in cybersecurity today. The browser is ground zero for countless attacks, and the team at SquareX has developed an elegant and powerful solution that provides critical visibility and control where it's needed most – directly within the native browser experience.'
Peak XV Partners, which first invested during SquareX's seed stage, has expressed confidence in the company's progress and direction.
'Having partnered with SquareX since their seed stage, we've been impressed by their vision and execution in tackling browser security challenges. We are excited to partner with them again as they demonstrate strong results in delivering much-needed cybersecurity capabilities to enterprise customers,' said Shailendra Singh, Managing Director at Peak XV.
SquareX's innovative approach aims to reshape how enterprises think about browser security, offering a way to protect users without disrupting their preferred digital workflows.