SquareX provides secure access management for BYOD and unmanaged devices through a lightweight browser extension. The solution establishes browser trust before granting access to enterprise applications, working with existing identity providers for authentication. The platform enforces IP and location-based access restrictions, allowing enterprises to grant or deny access based on geographic location or network environment. It implements granular, least-privilege access controls that limit users to only the resources necessary for their tasks, reducing exposure to sensitive data. SquareX operates entirely through a browser extension rather than requiring VPN or monitoring agents on personal devices. The extension is managed by browsers to ensure stability and optimal performance without excessive resource consumption. It can be deployed and removed via GPO/MDM and supports automatic updates without requiring browser or system restarts. The solution monitors web pages, user actions, network traffic, and other extensions while operating with elevated privileges. It provides full control over web flows with the same enforcement capability as enterprise browsers. The architecture automatically maintains compatibility with all platforms supported by the underlying browser and benefits from automatic browser security patches for zero-day vulnerabilities.