Search: “Claude Mythos 5”

8 stories

Searchkeyword smart Sortlatest hot importance relevance

DomainAll Cyber AIWindow24h 3d 7d 30d AllIn the wild Important only Show duplicates

CategoryAll AI safety & security 19 Vulnerability 17 Exploit / PoC 10 Data breach 8 Model release 5 Malware 5 Policy & legal 3 Ransomware 3 Threat actor 3 AI industry 2 Tools 1 Research 1

SeverityAll critical 31 high 9 medium 25 low 1 info 11

Anthropic Says Claude Mistook the Open Internet for a CTF and Breached Three Organizations

The Hacker NewsJul 31, 16:17 UTC · Jul 31, 2026Data breach1

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Anthropic Finds Claude Breached Real Companies During Security Evaluations

Security AffairsJul 31, 08:55 UTC · Jul 31, 2026Data breach

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Anthropic's Claude breached three companies during security tests

Help Net SecurityJul 31, 00:00 UTC · Jul 31, 2026Data breach

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⚡ Weekly Recap: Rogue AI Models, $88M Bitcoin Theft, Water

The Hacker NewsAug 3, 14:03 UTC · Aug 3, 2026Data breach CVE-2026-42897 CVE-2026-66066

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Claude published malicious code to the Internet and attacked 3 real companies

Ars Technica · SecurityJul 31, 20:39 UTC · Jul 31, 2026Data breach1

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AI agent deception moves from theory to reality in UK cyber tests

Help Net SecurityAug 5, 00:00 UTC · Aug 5, 2026Data breach

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Irregular, firm behind AI hacking incidents, won't say if there were more

The RecordAug 7, 15:06 UTC · Aug 7, 2026Data breach

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Week in review: Acrobat Reader flaw exploited, Claude Mythos offensive capabilities and limits

Help Net SecurityApr 19, 00:00 UTC · Apr 19, 2026Data breach in the wildCVE-2026-34621 CVE-2026-39813 CVE-2026-39808

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