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The Latest Breaking News from Mozilla

Anthropic AI model finds over 10,000 critical bugs across open-source software projects

Anthropic's new AI model, Mythos Preview, has uncovered over 10,000 software vulnerabilities. Partners in Project Glasswing found thousands of high-risk flaws. Companies like Cloudflare and Mozilla reported significant improvements in bug detection. This AI-driven approach is transforming cybersecurity by accelerating vulnerability discovery.

The Economic Times · May 25

Anthropic AI model finds over 10,000 critical bugs across open-source software projects

The AI startup said around 50 carefully selected partners, including technology firms and research organisations, were given limited access to the model over recent weeks. Mythos Preview was used to scan more than 1,000 open-source software projects during the trial.

The Economic Times · May 24

Mozilla VPN's shortcut lands on iPhone, with macOS and Linux users also getting a boost — here's all you need to know

Mozilla VPN’s latest updates introduce a handy iOS Control Center toggle for iPhone, alongside major performance and stability upgrades for macOS and Linux clients.

TechRadar · May 22

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After a year, Firefox finally stops crashing on Intel's Raptor Lake CPUs — Mozilla releases new version patch critical flaw on Intel 13th-gen and 14th-gen CPUs

Mozilla spent more than a year investigating widespread browser crashes on Intel 13th-gen and 14th-gen systems.

Tom’s Hardware · May 22

Hands off the VPNs — Mozilla warns UK regulators that age-restricting VPNs "would undermine the privacy and security of all users," while failing to protect kids

Mozilla has pushed back against UK proposals to age-restrict VPNs, arguing that kids use them for safety, not to bypass age checks, and that mandatory ID checks would put everyone at risk.

TechRadar · May 19

6 million more people are using Firefox because of new EU rules, which is good news for Chrome haters like me

Other third-party browsers are seeing upticks too.

PC Gamer · May 16

Mozilla, Stop Killing Games and more team up to tell the UK to stop making the internet worse

"Even targeted age restrictions of specific features could mean that all users are required to complete intrusive age assurance processes".

PC Gamer · May 6

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Proton, Tor, Mullvad, ExpressVPN, and Mozilla among the 19 organizations urging the UK government 'not to undermine the open web' as Children's Wellbeing and Schools Bill becomes law — a move that could 'infringe human rights'

The Act introduces new online restrictions for young people, alongside an obligation for service providers to take "reasonable anti-circumvention measures." Here's why privacy raises the alarm.

TechRadar · May 5

A suspected YouTube interface bug spikes RAM usage above 7 gigabytes, users report severe lag and frozen tabs — bug might be trapping browsers in an endless layout loop

Reports of YouTube freezing browsers and consuming massive amounts of RAM are spreading online, with developers tracing the issue to a suspected UI bug that may trigger endless layout recalculations and severe system lag.

Tom’s Hardware · May 3

This Firefox vulnerability may have been tracking all your private Tor identities – even in Private Mode

Researchers found a bug where websites could create a hidden ID and track users even in Private Mode.

TechRadar · Apr 24

Mozilla says Anthropic’s Mythos is ‘every bit as capable’ as ‘the world’s best security researchers’ after Firefox experiment — and says the ‘zero-days are numbered’

Mozilla’s experiment with Anthropic’s Mythos AI shows that machines can now match elite human researchers in finding software vulnerabilities

TechRadar · Apr 23

'Defenders finally have a chance to win, decisively': Firefox CTO raves about Claude Mythos' bug hunting capabilities after it finds 271 vulnerabilities

That's one heck of a fly swatter, Anthropic.

PC Gamer · Apr 22

Mythos and friends could be a 'net positive' for UK cyber security defenses but only if they're secured, says top cyber official

Mozilla can attest to that after using Mythos to find 271 bugs in Firefox 150.

TechRadar · Apr 22

“A solid list from the community,” as Reddit users highlight 10 open‑source apps that run great on Windows 11 and deserve more attention

Reddit users consistently recommend a core group of open-source apps, and they also work on Windows 11. Check them out.

Windows Central · Apr 18

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TechRadar · Apr 13

‘Going too far without user consent’: Mozilla blasts Microsoft’s AI creep as user backlash forces Copilot to be scaled back

Mozilla chides Microsoft for forcing its Copilot AI into apps and says Firefox works very differently.

PC Gamer · Apr 10

Mozilla says 'Microsoft goes too far' with Copilot, right before reassuring that you can turn off Firefox's 'AI enhancements'

Is AI integration really so inescapable?

Windows Central · Apr 10

"Repeated choices to serve their business over their customers": Mozilla accuses Microsoft of using 'dark patterns' to force its Copilot AI on Windows 11 users

Mozilla argues that Microsoft’s rollback of its aggressive Windows 11 Copilot campaign amounts to an admission that it relied on deceptive tactics and dark patterns to steer users into behaviors that serve its own interests.

Creative Bloq · Mar 17

Firefox teases new logo without iconic fox

I think I know what's coming.

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Windows Central · Mar 13

Still running Firefox on Windows 7? Mozilla has your back (for now) but admits it's risky without "official support from Microsoft"

Firefox just extended support for Windows 7, 8, and 8.1 by six months, giving systems that refuse to die more time to get updates.

TechRadar · Mar 9

Anthropic says it found a heap of Firefox security flaws using new Claude tools, says 'AI is making it possible to detect severe security vulnerabilities at highly accelerated speeds'

Claude finds 14 high-severity Firefox bugs in just a few weeks, rivaling what Mozilla could do in months.

Tom’s Hardware · Mar 8

Memory bit flips cause up to 15% of Firefox crashes, asserts Mozilla engineer — figure inferred from 470,000 auto-submitted crash reports

A Mozilla engineer has shared survey data and calculations suggesting that up to 15% of Firefox crashes are due to a bit flip.

Windows Central · Feb 26

Firefox gets "modern AI browser" features, but don't worry — Mozilla knows you'll hate it and already added an AI killswitch button

Firefox version 148 adds an AI "killswitch" to remove artificial intelligence implementations from affecting your browsing experience.

Windows Central · Feb 25

YouTube’s war on ad-blockers just got personal — punishing users by hiding video descriptions and comments

A new report by AdGuard suggests that YouTube has stopped showing comments and video descriptions to some users with ad blockers installed on their devices.

PC Gamer · Feb 19

Firefox is finally ending support for Windows 7, 8, and 8.1, and urges users to upgrade or switch to Linux

Mozilla notes, "most browsers, including Google Chrome and Microsoft Edge, have already ended support for Windows 7, 8 and 8.1."

Windows Central · Feb 18

Firefox is ending support for Windows 7 as Mozilla recommends its users upgrade to Windows 10/11 for continued security updates — or switch to Linux

Mozilla is ending support for Firefox on Windows 7, 8, and 8.1 in February 2026. Users must upgrade to a supported version of Windows to stay secure and continue receiving browser updates.

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