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I'm not sure how Mozilla focusing on security bug fixes is a tell of anything. It's great that Firefox is getting more secure, but this isn't mythos, this is dedicating the time to focus on these issues, LLMs have been decent at spotting those for a while now. But once again, gotta sell the hype.

Philippe Serhal@philippeserhal.com

If you were still unsure whether the Mythos announcement was just a marketing stunt: hacks.mozilla.org/2026/05/behi... Prepare.

8/5/26, 5:13 pm0 reposts0 likes

Philippe Serhal

@philippeserhal.com

8 May

Huh? From the article, authored by Mozilla: "[...] fixing the 271 bugs identified by Claude Mythos Preview". This isn't speculation, it's a statement of fact by the maintainers.

Emilia

@bewitching.dev

8 May

Yes, after a complete overhaul of their pipeline to detect these issues. This is less about mythos than it is about the people having put in the work into having a reliable harness. There's also been more work on security fixes this cycle: the graph represents fixes, not detection.

Emilia

@bewitching.dev

8 May

AI is great at finding these issues, I am not disputing that point at all. What I am disputing is the weight of mythos versus the amount of labour and time invested in this compared to the preceding months.