Browser security startup LayerX just raised another $11 million, bringing its total Series A funding to $45 million. It’s a notable move at a time when more organizations are reevaluating how they secure the browser layer without disrupting productivity or stacking on infrastructure complexity.

The fresh investment—an extension of last year’s $26 million round—was led by Jump Capital, with continued support from Dell Technologies Capital and Glilot Capital Partners. What LayerX is building sits at the intersection of browser usability and enterprise-grade protection, and that’s a growing pain point for security teams right now.

Instead of replacing users’ browsers with a heavy-handed enterprise alternative, LayerX offers a lightweight extension that integrates directly into Chrome, Edge, Firefox, and Safari. The extension delivers real-time control and visibility, allowing organizations to secure the browser without disrupting how employees work.

Here’s what the platform can do:

• Detect risky browser extensions
• Prevent data leakage, including through gen-AI tools
• Block phishing and malicious websites
• Enforce identity-based access controls for cloud services

The company is positioning itself as a viable alternative to Secure Service Edge (SSE) platforms or “rip-and-replace” enterprise browsers like Island. According to co-founder and CEO Or Eshed, both legacy options come with trade-offs—either added complexity and latency, or user friction that hurts productivity.

LayerX’s approach is different. It’s designed to provide “last-mile guardrails” at the user level, protecting against modern risks in SaaS, GenAI, and web-based workflows—without requiring organizations to change how their teams browse.

With browser-based threats increasing and identity risks tied to SaaS and GenAI tools climbing, this kind of flexible, invisible layer of security is becoming more appealing. And based on the new funding, investors clearly agree.