**Mozilla** is rolling out **Firefox 149**, which brings a built-in VPN tool, offering users added privacy protection with up to 50GB of monthly traffic. This feature employs a secure proxy server to route traffic exclusively from the browser, differentiating it from the company's commercial **Mozilla VPN**, which provides system-wide coverage. "Whether you’re using public Wi-Fi while traveling, searching for sensitive health information, or shopping for something personal, this feature gives you a simple way to stay protected,” **Mozilla** stated in its release notes. “Once you sign in and turn it on, you can hide your location and IP address by routing it through a secure proxy while you browse in Firefox.”  Users with a **Mozilla** account will receive 50 GB of traffic per month, with in-browser notifications alerting them as they approach the limit. The VPN feature can be toggled on or off via a switch in the top right corner of the browser interface. Users also have the option to activate the VPN only on specific websites (up to five) to conserve traffic. Some websites and essential services are excluded from VPN routing to prevent account sign-in issues and ensure proper VPN reconnection. **Mozilla** assures users that it will only collect technical data necessary for maintaining the service's performance and stability, as well as interaction data to understand usage patterns. "For example, we may log whether a connection succeeded or failed, or record that 2 GB of data was used on a certain day," the company explained. The routing server is based in the U.S., and is selected based on location and performance factors to optimize the user experience. The built-in VPN feature is being rolled out progressively to users in the U.S., UK, Germany, and France. There is no current timeline for expanding the service to other regions. ### Split View and Enhanced Security **Firefox 149** also introduces Split View, a feature already present in **Google Chrome**, which allows users to place tabs side by side within the same browser window. **Mozilla** highlights use cases such as planning, comparing, note-taking, and administrative tasks.  Furthermore, **Firefox** now automatically blocks notifications and revokes permissions from websites flagged as malicious by the ‘SafeBrowsing’ security system. ### Security Vulnerabilities Addressed **Firefox 149** includes fixes for multiple security vulnerabilities. The update addresses 46 issues, with more than half receiving a high severity score. Several of these are user-after-free flaws, out-of-bounds errors, JIT engine flaws, and sandbox escape vulnerabilities.