New details about what we found, and how agentic harnesses are now able to reproduce real bugs and dismiss false positives.
A new Anthropic model found security problems ‘in every major operating system and web browser’
Nvidia, Google, Apple, Microsoft, and others will use Claude Mythos Preview to spot vulnerabilities in their systems.
FOSDEM 2025 - The Firefox AI Platform
Learn how the privacy-preserving local inference runtime works in Firefox Desktop, our current use cases and how to create your own features using the Experimental Web Extension API.
Agentic Browser Security: Indirect Prompt Injection in Perplexity Comet | Brave
The attack we developed shows that traditional Web security assumptions don't hold for agentic AI, and that we need new security and privacy architectures for agentic browsing.
AI controls are coming to Firefox | The Mozilla Blog
AI is changing the web, and people want very different things from it. We’ve heard from many who want nothing to do with AI. We’ve also heard from
Firefox OS, Animations & the Dark Cubic-Bezier of the Soul – Mozilla Hacks - the Web developer blog
I’ve been using Firefox OS daily for a couple of years now (wow, time flies!). While performance has steadily improved with efforts like Project Silk, I've often noticed delays in ...
FOSDEM 2025 - Mozilla Builders: Working with the OSS community to build the future of AI
With AI already transforming how we use computers and the Web, Mozilla believes it's crucial that open source lead the charge. We cannot afford another Internet Explorer situation, where one or a handful of powerful corporations seize control of fundamental technology. Open source AI can and must offer a viable, competitive alternative to closed source commercial offerings.
AI #163: Mythos Quest
There exists an AI model, Claude Mythos, that has discovered critical safety vulnerabilities in every major operating system and browser.
Firefox AI & WebExtensions
I gave an introduction to the Firefox AI runtime and WebExtensions at a French local conference this month. This article is a loose transcript of what I said.
Claude Mythos Preview \ red.anthropic.com
Earlier today we announced Claude Mythos Preview, a new general-purpose language model. This model performs strongly across the board, but it is strikingly capable at computer security tasks. In response, we have launched Project Glasswing, an effort to use Mythos Preview to help secure the world’s most critical software, and to prepare the industry for the practices we all will need to adopt to keep ahead of cyberattackers.
Firefox's Major 'Nova' Redesign Officially Arrives in Nightly!
Sawyer Hood on Twitter / X
Introducing the new dev-browser cli. The fastest way for an agent to use a browser is to let it write code. Just `npm i -g dev-browser` and tell your agent to "use dev-browser" pic.twitter.com/U8VmsT5XVc— Sawyer Hood (@sawyerhood) March 25, 2026
Browser Use - The way AI uses the internet
78,000+ GitHub stars. Trusted by Fortune 500. The #1 open-source browser automation platform.
