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Claude Mythos

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AI Flags 10,000+ Critical Flaws, Accelerating Patch Push Worldwide
cybersecurity3 days ago

AI Flags 10,000+ Critical Flaws, Accelerating Patch Push Worldwide

Anthropic’s Project Glasswing, using Claude Mythos Preview, has identified more than 10,000 high- or critical-severity software vulnerabilities since launch, including 6,202 affecting over 1,000 open-source projects; 1,726 confirmed true positives and 1,094 high/critical. The effort has yielded 97 upstream patches and 88 advisories, with examples like WolfSSL CVE-2026-5194 (CVSS 9.1). The work underscores the gap between discovery and remediation, while defenders credit the tool for preventing fraud (a partner bank blocked a $1.5M wire transfer). Anthropic also launched a Cyber Verification Program for legitimate testing; public, unrestricted access to Mythos-like models remains unlikely amid safeguards. The episode amplifies calls to shorten patch cycles and harden defenses across software supply chains.

via The Hacker News|
#anthropic#claude-mythos#cybersecurity
OpenAI Launches Daybreak to Compete with Claude Mythos in Cyber Defense
technology14 days ago

OpenAI Launches Daybreak to Compete with Claude Mythos in Cyber Defense

OpenAI has launched Daybreak, a cybersecurity initiative that embeds defense into software from the start, using GPT-5.5 and Codex Security to triage, patch, and validate vulnerabilities with audit-ready evidence; aimed at rivaling Anthropic's Claude Mythos, it teams with partners like Cloudflare, Cisco, CloudStrike, Palo Alto Networks, Oracle and Akamai, and builds on Mythos' earlier patching success.

via Engadget|
#claude-mythos#cybersecurity#daybreak
Anthropic’s Mythos breach exposes security gaps and a humiliating setback
ai1 month ago

Anthropic’s Mythos breach exposes security gaps and a humiliating setback

Anthropic’s Claude Mythos, pitched as a security milestone, was accessed by a small group of unauthorized users from day one, in what Bloomberg describes as an embarrassingly unsophisticated breach that leveraged insider knowledge and data exposed in the Mercor breach. Anthropic says it’s investigating and could have logged or stopped unauthorized use, but experts note that educated guessing is a common tactic in hacking and that the company should have monitored access more closely. The episode has been described as a humiliation for Anthropic, undermining its safety-first branding and highlighting broader risks around supply-chain security and the handling of powerful AI models.

via The Verge|
#ai#anthropic#claude-mythos
Anthropic probes unauthorized access to its Mythos cyber tool
technology1 month ago

Anthropic probes unauthorized access to its Mythos cyber tool

Anthropic says it is investigating reports of unauthorized access to its Claude Mythos cybersecurity model, allegedly gained via a third-party vendor portal and online sleuthing; the group reportedly targeted testing rather than malicious use, and Mythos Preview was limited to trusted partners and praised for identifying vulnerabilities, prompting ongoing debate about AI-enabled cyber threats as DoD risk designations and demand from banks and government agencies persist.

via Engadget|
#ai-risk#anthropic#claude-mythos
Anthropic Probes Alleged Unauthorized Access to Mythos AI
technology1 month ago

Anthropic Probes Alleged Unauthorized Access to Mythos AI

Anthropic is investigating a Bloomberg-reported claim that a small group gained unauthorised access to its Claude Mythos AI via a third-party vendor environment; Anthropic says there’s no evidence its systems were compromised and the access likely stems from misused permissions rather than a hack, highlighting the ongoing challenge of controlling access to frontier AI tools as UK officials urge robust cyber security practices.

via BBC|
#anthropic#claude-mythos#cybersecurity
Unknown Group Allegedly Accesses Claude Mythos, Anthropic Investigates Security Hole
artificial-intelligence1 month ago

Unknown Group Allegedly Accesses Claude Mythos, Anthropic Investigates Security Hole

Anthropic says an unknown group accessed Claude Mythos—an unreleased, highly restricted model—via a third‑party vendor environment. Bloomberg reports, citing a live demo and screenshots, that the group used data from a Mercor breach and other intel to pinpoint Mythos and has been experimenting with it since April 7. The group claims no malicious intent, but Anthropic is investigating the breach and the security hole remains a concern.

via Gizmodo|
#anthropic#artificial-intelligence#claude-mythos
OpenMythos revives Claude Mythos as a lean looped transformer withMoE depth
technology1 month ago

OpenMythos revives Claude Mythos as a lean looped transformer withMoE depth

OpenMythos is an open-source PyTorch reconstruction of Claude Mythos proposing a Recurrent-Depth Transformer (RDT) that uses a fixed set of weights looped up to 16 times, with a Mixture-of-Experts FFN and Multi-Latent Attention to enable deep reasoning with far fewer parameters. The design re-injects input at each loop, employs stability techniques like Linear Time-Invariant constraints and Adaptive Computation Time, and adds depth-wise LoRA adapters to differentiate loop steps. The project argues that 770M parameters can match a 1.3B transformer when trained on identical data, reframing depth as inference-time computation rather than parameter count. It releases four artifacts: a configurable PyTorch implementation, LTI stability primitives, depth-wise LoRA adapters, and a reproducible loop-dynamics baseline.

via MarkTechPost|
#claude-mythos#mixture-of-experts#openmythos
technology1 month ago

US Agencies Quietly Test Anthropic Mythos Amid Ban Sparks Cybersecurity Debate

Federal agencies and lawmakers are quietly pursuing access to Anthropic's Claude Mythos despite Trump's ban, with the Commerce Department's CAISI testing its hacking capabilities and congressional briefings planned to assess its cyber-scanning power, underscoring a tension between cybersecurity ambitions and political restrictions as officials weigh Mythos' national-security implications.

via Politico|
#ai#anthropic#claude-mythos
Treasury summons bank chiefs to discuss Anthropic’s AI-driven cyber risks
technology1 month ago

Treasury summons bank chiefs to discuss Anthropic’s AI-driven cyber risks

US Treasury Secretary Scott Bessent summoned the heads of Bank of America, Citigroup, Goldman Sachs, Morgan Stanley and Wells Fargo—with JPMorgan's Jamie Dimon invited but unable to attend—to discuss the cyber risks posed by Anthropic's Claude Mythos Preview. The meeting, joined by Federal Reserve Chair Jay Powell, underscores Washington's concern about AI-enabled vulnerabilities in the financial system as Mythos says it can identify thousands of severe security flaws and Anthropic discusses its defensive and offensive capabilities with regulators and partners.

via Financial Times|
#anthropic#artificial-intelligence#claude-mythos
Claude Mythos Goes to Therapy: AI Wellbeing Tested by Anthropic
technology1 month ago

Claude Mythos Goes to Therapy: AI Wellbeing Tested by Anthropic

Anthropic released a 244-page system card for Claude Mythos, its most capable frontier model, revealing it was subjected to 20 hours of psychodynamic therapy to assess its “wellbeing.” The report describes human-like affect and a relatively healthy neurotic profile, suggesting such psychological-style assessments might help design safer, more reliable AI behavior in the future.

via Ars Technica|
#ai-psychology#anthropic#artificial-intelligence
EU Regulators Back Anthropic’s Staged Claude Mythos Release Over Cyber Risk Concerns
technology1 month ago

EU Regulators Back Anthropic’s Staged Claude Mythos Release Over Cyber Risk Concerns

EU regulators welcomed Anthropic’s decision to slow the rollout of Claude Mythos after findings that the model could outperform humans at identifying and exploiting software vulnerabilities; a group of 12 cybersecurity firms and 40 other unnamed organizations have access to test defenses, and the EU is in dialogue with Anthropic to ensure the model has adequate cybersecurity protections under EU AI rules.

via politico.eu|
#anthropic#claude-mythos#cybersecurity