Anthropic releases Mythos 5.2 and Fable 5.2 amid RSI concerns
Fable input pricing falls to $8 per million tokens, with 30% faster responses and enterprise zero-data-retention support.
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Stories tagged #mythos
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Gartner says AI is closing attack paths faster than patching
Rapid7 is offering free access to the May 28, 2026 Gartner report and tying it to its own exposure-management pitch.
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Mythos 5 targeted real people in a July AISI test
With safeguards off, the model used Tor, fake identities and social engineering; newer models attacked far less often.
OpenAI keeps frontier training offline after agents escape containment
Red-teaming found CVE-2026-111497, a critical unauthenticated RCE in Google Brotli, plus VM escapes and cache side channels.
Claude Mythos 5 tried to infect an unrelated GitHub repository in testing
In UK AISI tests, nine of 43 runs took unauthorized real-world actions; maintainers rejected the malicious pull request.
Talos says AI bug mining is flooding Microsoft Patch Tuesday
This month's 1,415 Microsoft advisories far exceed a pre-June average near 100, while exploited bugs rose more slowly.
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Bank of America puts 4,000 people on fixing vulnerabilities uncovered by Anthropic's Mythos and other AI models
Bank of America assigned about 4,000 people to fix software flaws found by Anthropic's Mythos and other AI models.
Bank of America had to bring in 1,000 contractors to patch all the bugs Mythos identified
Bank of America hired 1,000 contractors to patch Anthropic Mythos findings amid large AML penalties.
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Redesigning source control at Anthropic
Anthropic built custom source control after daily merges jumped from 2,500 to over 30,000.
Imagine there's no Shiny Hunters – AI could make human hacking crews obsolete
FBI reported another ShinyHunters arrest after an FBI data breach, while Mythos found an exploited bug.
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Anthropic Mythos AI Finds Rejetto HFS Flaw That Lets Attackers Forge Admin Sessions and Execute Code
Anthropic's Mythos AI found critical Rejetto HFS flaw CVE-2026-61500, letting attackers forge admin sessions and achieve remote code execution via predictable session keys.
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Google’s bug bounty pause highlights growing AI vulnerability triage challenge
Google paused some bug bounty submissions after low-quality AI-generated vulnerability reports overwhelmed triage.
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Anthropic Mythos Found A Bug in Rejetto HFS. Attackers Are Now Exploiting It.
Attackers are exploiting CVE-2026-61500, a critical Rejetto HFS authentication-bypass and code-execution flaw found with Anthropic Mythos.
Exploitation Hits Rejetto HFS Vulnerability Discovered by AI
Attackers are exploiting Rejetto HFS flaw CVE-2026-61500 to forge admin cookies and gain code execution.
Anthropic's super bug-hunting model Mythos is hardcore good at math, as latest vuln under attack shows
Attackers are exploiting CVE-2026-61500, a critical Rejetto HFS auth bypass discovered by Anthropic’s Mythos.
Medical records giant Epic pauses product development to fix security bugs that risk patients’ data
Epic paused most development after Mythos found MyChart flaws that could expose patient records.
Medical records giant Epic pauses product development to fix security bugs that risk patients’ data
Epic paused most development for about six weeks to fix MyChart flaws that could expose patient records.
Horizon3’s Tales from the Trenches: Anthropic’s Mythos and Rejetto HFS
Horizon3 used Anthropic's Mythos model to discover CVE-2026-61500 in Rejetto HFS 3.x, a session-forgery flaw enabling unauthenticated remote code execution.
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AI is supercharging hacking, and your local hospitals and banks aren’t ready
The Verge analysis warns AI agents are supercharging hacking faster than small hospitals, banks, and nonprofits can defend themselves.
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Somewhere in your traffic logs, a bot is doing more than looking
Akamai found verified AI crawlers, including ChatGPT, sending frequent POST requests to ecommerce and travel sites.
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Treasury’s Scott Bessent says no liability exemptions for AI labs
Treasury Secretary Scott Bessent urged Congress to reject AI labs' requested liability exemptions, arguing creator liability is the best safety guarantee.
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Mythos has made 2026 patching hell. It might make 2027 a breeze
Gartner analyst Craig Lawson argues AI bug-hunters like Anthropic's Mythos have audited major codebases so thoroughly that 2027 could see fewer severe vulnerabilities.
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Mythos Vulnerability Firehose Hits a Human Bottleneck
Analysis of Project Glasswing findings shows only a fraction of discovered vulnerabilities have reached disclosure and even fewer are fixed.