All articles tagged with #firefox
Firefox 152 ships with JPEG-XL support compiled by default on beta/release builds but disabled at runtime behind a preference, introduces a redesigned settings interface, HDR video support on Windows for certain hardware, and CSS field-sizing; Vulkan Video decoding is expected in Firefox 153.
Firefox 151 adds desktop support for the Web Serial API, letting websites read from and write to serial devices via JavaScript. Mozilla and Adafruit are collaborating to validate browser-based hardware workflows, enabling direct hardware communication (e.g., microcontrollers) in the browser with less setup and no extra software for many projects.
Mozilla’s Project Nova redesign for Firefox introduces a single, user-visible AI-off switch to disable all AI features, plus a cleaner UI and plain-language privacy controls, signaling a move toward opt-out AI in browsers while keeping some AI features available by default.
Mozilla is rolling out Project Nova, a rounded, more customizable Firefox interface designed to make privacy settings easier to find and give users clearer controls over AI features; the overhaul includes new icons, wallpapers, themes, and productivity tweaks like compact mode, tab groups, split view, and vertical tabs, with rollout planned later this year. The Web Serial API is already available in Firefox 151, enabling websites to interact with devices without native apps.
Firefox 153 Nightly now enables a redesigned Settings UI by default, offering clearer organization, easier navigation, and improved descriptions while keeping AI controls. Mozilla hopes the redesign will eventually reach the Firefox 152 release channel, with more details on the Nightly Blog.
Mozilla says Claude Mythos helped identify and patch 271 Firefox vulnerabilities, but the model didn’t find bugs beyond what human researchers would, and the feature can be turned off by users.
Mozilla now ships a built-in VPN with Firefox that shields only browser traffic (not apps or system processes) using WireGuard, with a 50GB data limit—great for casual browsing but not a full privacy solution.
Mozilla says Anthropic’s Mythos Preview identified 271 security vulnerabilities in Firefox 150 during pre-release analysis, vastly more than the 22 found by Opus 4.6 for Firefox 148, highlighting AI-assisted vulnerability discovery as a potential shift toward stronger defense and raising implications for open-source security testing.
Mozilla's Firefox 150 release uses Anthropic Mythos Preview to identify and fix 271 vulnerabilities, marking a major AI-assisted bug-hunting milestone; Mozilla cautions that the industry will have to go through a difficult transition to secure software with these tools, especially for open-source projects, while anticipating that such capabilities will become common for both defenders and attackers.
Lifehacker explains how vertical tabs free up header space and improve tab visibility, with step-by-step instructions to enable them in Chrome, Firefox, Edge, and Zen Browser, plus compact mode and tab-group tips.
Firefox 149 adds a free built-in browser VPN that routes only Firefox traffic through a secure proxy, offers 50GB per month per Mozilla account, supports per-site activation, notifies you as you near the limit, and is rolling out in the U.S., U.K., Germany, and France alongside other updates and security fixes.
Firefox 149 brings several improvements, including faster PDF handling and a move to a memory-safe JPEG-XL decoder (jxl-rs), though this JPEG-XL change is currently kept to nightly builds and not in the stable release. On Linux, Firefox now defaults to the XDG portal file picker (with GTK3 fallback); users can download images from PDFs via the context menu, and HTTP/3 uploads are more robust. The release also features updated error pages, new developer APIs, and a built-in free VPN offering up to 50 GB per month. Binaries are available from Mozilla’s FTP site.
Mozilla’s Firefox 149 will include a free built-in VPN (50 GB/month in the US, France, Germany and the UK) starting March 24, plus two new features—Split View and Tab Notes—while also introducing a new mascot named Kit, all as part of Mozilla’s push for privacy and open web standards.
Mozilla will roll out a free, built-in browser VPN with Firefox 149, starting March 24, 2026, routing only browser traffic through a proxy to mask IPs with 50GB/month in the US, France, Germany, and the UK; it is browser-only, phased in-region, and Mozilla has not disclosed the provider, aligning with its privacy-first stance.
Anthropic’s Claude Opus 4.6 reportedly scanned Firefox for bugs, finding over 100 issues in two weeks, including 14 high-severity flaws. Mozilla validated and fixed many of these findings and expanded collaboration to apply the approach across more of the browser codebase, highlighting AI-assisted security analysis as a powerful addition to traditional fuzzing and static analysis.