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AI models like Anthropic's Mythos can identify a significant number of zero-day vulnerabilities in software like Firefox.

AICybersecurityTechnologyApr 21, 2026score 1.703 posts · 170 replies across 2 instances
Mozilla and Anthropic's Mythos AI model identified 271 zero-day vulnerabilities in Firefox 150, highlighting the potential of AI in cybersecurity. The CTO of Anthropic claims the AI model is as capable as top security researchers.

Claims

AI models like Anthropic's Mythos can identify a significant number of zero-day vulnerabilities in software like Firefox.
Parent: AIEntity: AI security modelsImpact: positiveDate: Apr 21, 2026 - Apr 23, 2026Target: AI's capability in identifying software vulnerabilities

Source posts

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Mozilla: Anthropic's Mythos found 271 zero-day vulnerabilities in Firefox 150 CTO says new AI model is "every bit as capable" as world's best security researchers. https://arstechnica.com/ai/2026/04/mozilla-anthropics-mythos-found-271-zero-day-vulnerabilities-in-firefox-150/?utm_brand=arstechnica&utm_social-type=owned&utm_source=mastodon&utm_medium=social
16 boosts · 27 favs · 10 replies · Apr 21, 2026
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Mozilla: Anthropic's Mythos found 271 security vulnerabilities in Firefox 150 L: https://arstechnica.com/ai/2026/04/mozilla-anthropics-mythos-found-271-zero-day-vulnerabilities-in-firefox-150/ C: https://news.ycombinator.com/item?id=47855384 posted on 2026.04.21 at 18:22:28 (c=0, p=7)
2 boosts · 0 favs · 0 replies · Apr 21, 2026
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📰 Mozilla: Anthropic's Mythos found 271 zero-day vulnerabilities in Firefox 150 CTO says new AI model is "every bit as capable" as world's best security researchers. 📰 Source: Ars Technica 🔗 Link: https://arstechnica.com/ai/2026/04/mozilla-anthropics-mythos-found-271-zero-day-vulnerabilities-in-firefox-150/ #AI #ArtificialIntelligence
0 boosts · 0 favs · 0 replies · Apr 21, 2026
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Mozilla: Anthropic's Mythos found 271 security vulnerabilities in Firefox 150 https://arstechnica.com/ai/2026/04/mozilla-anthropics-mythos-found-271-zero-day-vulnerabilities-in-firefox-150/?utm_source=flipboard&utm_medium=activitypub Posted into Ars Technica @ars-technica-ArsTechnica
0 boosts · 0 favs · 0 replies · Apr 21, 2026
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I guess it makes sense security researchers would be the first to get eaten by AI. I wonder if CEOs are genuinely worried yet. Kinda clear where this is going. —— Mozilla: Anthropic's Mythos found 271 security vulnerabilities in Firefox 150 https://arstechnica.com/ai/2026/04/mozilla-anthropics-mythos-found-271-zero-day-vulnerabilities-in-firefox-150/
2 boosts · 0 favs · 0 replies · Apr 22, 2026
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Mozilla: Anthropic's Mythos found 271 security vulnerabilities in Firefox 150 https://arstechnica.com/ai/2026/04/mozilla-anthropics-mythos-found-271-zero-day-vulnerabilities-in-firefox-150/?utm_source=flipboard&utm_medium=activitypub Posted into Top Stories in Tech @top-stories-in-tech-thenewsdesk
0 boosts · 0 favs · 0 replies · Apr 22, 2026
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Mozilla: Anthropic's Mythos found 271 security vulnerabilities in Firefox 150 https://arstechnica.com/ai/2026/04/mozilla-anthropics-mythos-found-271-zero-day-vulnerabilities-in-firefox-150/?utm_source=flipboard&utm_medium=activitypub Posted into Cybersecurity and Data Hacks @cybersecurity-and-data-hacks-tech
1 boosts · 0 favs · 0 replies · Apr 22, 2026
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🔖 Mozilla: Anthropic's Mythos found 271 security vulnerabilities in Firefox 150 - CTO says new AI model is “every bit as capable” as world’s best security researchers | Ars Technica https://arstechnica.com/ai/2026/04/mozilla-anthropics-mythos-found-271-zero-day-vulnerabilities-in-firefox-150/ #BookmarkShare
0 boosts · 0 favs · 0 replies · Apr 22, 2026
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Mozilla: Anthropic's Mythos found 271 security vulnerabilities in Firefox 150… #technology #thegeektribune https://arstechnica.com/ai/2026/04/mozilla-anthropics-mythos-found-271-zero-day-vulnerabilities-in-firefox-150/
0 boosts · 0 favs · 0 replies · Apr 21, 2026
#technology#thegeektribune
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"Mozilla: Anthropic's Mythos found 271 security vulnerabilities in Firefox 150" "CTO says new AI model is "every bit as capable" as world's best security researchers." https://arstechnica.com/ai/2026/04/mozilla-anthropics-mythos-found-271-zero-day-vulnerabilities-in-firefox-150/ #Firefox
0 boosts · 0 favs · 0 replies · Apr 22, 2026
#firefox
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#Mozilla: Anthropic’s Mythos found 271 security vulnerabilities in Firefox 150 CTO says new AI model is “every bit as capable” as world’s best security researchers. https://arstechnica.com/ai/2026/04/mozilla-anthropics-mythos-found-271-zero-day-vulnerabilities-in-firefox-150/
0 boosts · 0 favs · 0 replies · Apr 22, 2026
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"Mozilla: Anthropic's Mythos found 271 security vulnerabilities in Firefox 150 - Ars Technica" https://arstechnica.com/ai/2026/04/mozilla-anthropics-mythos-found-271-zero-day-vulnerabilities-in-firefox-150/
1 boosts · 0 favs · 0 replies · Apr 22, 2026
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Mozilla: Anthropic's Mythos found 271 security vulnerabilities in Firefox 150 - Ars Technica https://arstechnica.com/ai/2026/04/mozilla-anthropics-mythos-found-271-zero-day-vulnerabilities-in-firefox-150/
0 boosts · 0 favs · 0 replies · Apr 23, 2026
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https://arstechnica.com/ai/2026/04/mozilla-anthropics-mythos-found-271-zero-day-vulnerabilities-in-firefox-150/ But did it miss vulnerability #272? Mozilla: Anthropic’s Mythos found 271 security vulnerabilities in Firefox 150 CTO says new AI model is “every bit as… Posted by Franco
0 boosts · 0 favs · 0 replies · Apr 22, 2026