From Newsgroup: alt.comp.software.seamonk

Mozilla Used AnthropicrCOs Mythos to Find and Fix 271 Bugs in Firefox

Two interesting articles on this, Wired & Arstechnica

https://arstechnica.com/ai/2026/04/mozilla-anthropics-mythos-found-271-zero-day-vulnerabilities-in-firefox-150/
Kyle Orland Senior Gaming Editor

More recently, he has also been helping to cover the rise of

generative AI and other artificial intelligence topics for Ars.

https://www.wired.com/story/mozilla-used-anthropics-mythos-to-find-271-bugs-in-firefox/
Lily Hay Newman Senior writer
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Mike Easter

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From Newsgroup: alt.comp.software.seamonk

Mike Easter <MikeE@ster.invalid> Wrote in message:

Mozilla Used AnthropicrCOs Mythos to Find and Fix 271 Bugs in Firefox

Two interesting articles on this, Wired & Arstechnica

https://arstechnica.com/ai/2026/04/mozilla-anthropics-mythos-found-271-zero-day-vulnerabilities-in-firefox-150/
Kyle Orland Senior Gaming Editor

More recently, he has also been helping to cover the rise of

generative AI and other artificial intelligence topics for Ars.

https://www.wired.com/story/mozilla-used-anthropics-mythos-to-find-271-bugs-in-firefox/
Lily Hay Newman Senior writer

Here's the piece in the Moz Bkog <https://blog.mozilla.org/en/privacy-security/ai-security-zero-day-vulnerabilities/>
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From Newsgroup: alt.comp.software.seamonk

Mike Easter wrote:

Mozilla Used AnthropicrCOs Mythos to Find and Fix 271 Bugs in Firefox Finally, a use of AI to improve browsers ...

p.s. where was the O/P quoted from?

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From Newsgroup: alt.comp.software.seamonk

Mike Easter <MikeE@ster.invalid> writes:

Mozilla Used AnthropicrCOs Mythos to Find and Fix 271 Bugs in Firefox

Two interesting articles on this, Wired & Arstechnica

https://arstechnica.com/ai/2026/04/mozilla-anthropics-mythos-found-271-zero-day-vulnerabilities-in-firefox-150/
Kyle Orland Senior Gaming Editor > More recently, he has also been
helping to cover the rise of generative AI and other artificial
intelligence topics for Ars.

https://www.wired.com/story/mozilla-used-anthropics-mythos-to-find-271-bugs-in-firefox/
Lily Hay Newman Senior writer

Are they all fixed? It doesn't mention 271 here:

https://www.mozilla.org/en-US/security/advisories/mfsa2026-30/

(Perhaps they are not all security bugs?)
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From Newsgroup: alt.comp.software.seamonk

On Wed, 22 Apr 2026 13:01:54 +0100, Richmond <dnomhcir@gmx.com> wrote:

Mike Easter <MikeE@ster.invalid> writes:

https://arstechnica.com/ai/2026/04/mozilla-anthropics-mythos-found-271-zero-day-vulnerabilities-in-firefox-150/

Are they all fixed? It doesn't mention 271 here:

Notice, in the link above, "vulnerabilities-in-firefox-150"

I assume that Mythos was looking at the released v150.0.0.

Yikes!
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croy
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From Newsgroup: alt.comp.software.seamonk

croy <croy@spam.invalid.net> writes:

On Wed, 22 Apr 2026 13:01:54 +0100, Richmond <dnomhcir@gmx.com> wrote:

Mike Easter <MikeE@ster.invalid> writes:

https://arstechnica.com/ai/2026/04/mozilla-anthropics-mythos-found-271-zero-day-vulnerabilities-in-firefox-150/

Are they all fixed? It doesn't mention 271 here:

Notice, in the link above, "vulnerabilities-in-firefox-150"

I assume that Mythos was looking at the released v150.0.0.

Yikes!

Yes, if you follow the release notes for 150:

https://www.firefox.com/en-US/firefox/150.0/releasenotes/

it says "fixed" and then points here:

https://www.mozilla.org/en-US/security/advisories/mfsa2026-30/

which does not mention 271.

Perhaps these fixes will be in the next release? in which case they
maybe shouldn't be publicised.
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From Newsgroup: alt.comp.software.seamonk

Dave Royal <dave@dave123royal.com> Wrote in message:

Mike Easter <MikeE@ster.invalid> Wrote in message:

Mozilla Used AnthropicrCOs Mythos to Find and Fix 271 Bugs in Firefox

Two interesting articles on this, Wired & Arstechnica

https://arstechnica.com/ai/2026/04/mozilla-anthropics-mythos-found-271-zero-day-vulnerabilities-in-firefox-150/
Kyle Orland Senior Gaming Editor

More recently, he has also been helping to cover the rise of

generative AI and other artificial intelligence topics for Ars.

https://www.wired.com/story/mozilla-used-anthropics-mythos-to-find-271-bugs-in-firefox/
Lily Hay Newman Senior writer

Here's the piece in the Moz Blog <https://blog.mozilla.org/en/privacy-security/ai-security-zero-day-vulnerabilities/>

And here's last week's piece about Mythos in the NYT by By Raffi
Krikorian, chief technology officer at Mozilla.

<https://www.nytimes.com/2026/04/15/opinion/mythos-open-souce-internet.html?unlocked_article_code=1.c1A.iKyQ.IXGBsc-oXtR6&smid=url-share>
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From Newsgroup: alt.comp.software.seamonk

Richmond <dnomhcir@gmx.com> wrote:

croy <croy@spam.invalid.net> writes:

On Wed, 22 Apr 2026 13:01:54 +0100, Richmond <dnomhcir@gmx.com> wrote: >>>Mike Easter <MikeE@ster.invalid> writes:

https://arstechnica.com/ai/2026/04/mozilla-anthropics-mythos-found-271-zero-day-vulnerabilities-in-firefox-150/

Are they all fixed? It doesn't mention 271 here:

Notice, in the link above, "vulnerabilities-in-firefox-150"

I assume that Mythos was looking at the released v150.0.0.

Yikes!

Yes, if you follow the release notes for 150:

https://www.firefox.com/en-US/firefox/150.0/releasenotes/

it says "fixed" and then points here:

https://www.mozilla.org/en-US/security/advisories/mfsa2026-30/

which does not mention 271.

"Memory safety bugs" entries at the end could cover any number of
bugs. That's usually in the security advisories though, so it's
nothing specific to this AI usage.
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