Claude Mythos Preview

Anthropic announced the restoration of access to its Fable 5 and Mythos 5 AI models after the Department of Commerce lifted export controls. The Trump administration had previously imposed restrictions requiring Anthropic to suspend access for foreign users, leading to a dispute that prompted company officials to negotiate in Washington D.C.

Cisco used Anthropic’s Claude Mythos Preview and OpenAI’s GPT 5.5-Cyber to scan 1.8 billion lines of code in eight weeks, a task that would have taken eight years manually, but did not disclose the number of vulnerabilities found. Anthropic expanded its Project Glasswing partner program to 200 organizations, and Palo Alto Networks reported 26 CVEs discovered using Mythos in a month.

Anthropic is expanding its Project Glasswing program to 150 new organizations across 15 countries, focusing on underrepresented sectors like power, water, and healthcare. The initiative, using its Claude Mythos Preview model, has already identified over 10,000 high- or critical-severity software vulnerabilities. Partners such as Cloudflare and Mozilla reported significant increases in bug discovery rates, but Anthropic emphasizes challenges in addressing these flaws due to human resource limitations.

Anthropic PBC is poised to widen its lead over OpenAI due to its first-mover IPO advantage. The company has developed a new AI tool called Claude Mythos Preview, which it deems too powerful for public release.

Researchers found that AI models, including Anthropic's Claude Mythos Preview and OpenAI's GPT-5.5, have surpassed benchmarks for autonomous cyber capability, significantly outperforming previous trends. The AI Security Institute and Palo Alto Networks conducted separate tests, with results showing the models' ability to complete complex cybersecurity tasks autonomously. This breakthrough has significant implications for the field of artificial intelligence.

Anthropic’s Claude Mythos Preview, announced April 7, is a cybersecurity-focused AI system capable of identifying vulnerabilities at scale. It has sparked debate about organizations' ability to validate, prioritize, and remediate discovered vulnerabilities, highlighting gaps in readiness for large-scale vulnerability management.

The article highlights how traditional cybersecurity frameworks and metrics are inadequate in the AI-driven era, where threats evolve rapidly. It emphasizes the need for CISOs to adopt dynamic strategies, leveraging runtime visibility and real-time risk assessment to address AI-enabled attacks and cloud environment complexities. Anthropic’s Claude Mythos Preview exemplifies the accelerated capabilities of AI in vulnerability discovery.

Anthropic's Mythos AI model, a cybersecurity tool capable of exploiting vulnerabilities in major operating systems and browsers, was accessed by unauthorized users through tactics involving a third-party contractor and internet sleuthing tools. Bloomberg reported the breach, highlighting the model's potential dangers if misused.

The Trump administration's conflict with AI company Anthropic over national security concerns may ease due to Anthropic's new cybersecurity model, Claude Mythos Preview. The dispute arose after Anthropic refused to allow its technology to be used for domestic mass surveillance or lethal autonomous weapons without human oversight.

Anthropic announced Claude Mythos Preview on April 7, a new AI model that the author claims could autonomously exploit previously unknown vulnerabilities in major operating systems and web browsers without human supervision. The announcement coincided with the author's completion of research on AI-enabled cyberattacks targeting U.S. critical infrastructure, revealing that barriers between nation-state-level hacking capabilities and widespread access are rapidly eroding.

The AI Safety Institute evaluated Claude Mythos Preview's cyber capabilities, with comments discussed on Hacker News. The analysis highlights technical assessments and user feedback on the AI's security features.

Anthropic's new AI model, Claude Mythos Preview, has raised concerns about its potential power and security risks. The company warns the model, designed to find software security flaws, could fall into the wrong hands. Former AI executive Matt Shumer discusses the report on CBS Mornings.

Treasury Secretary Scott Bessent and Federal Reserve Chair Jerome Powell convened Wall Street CEOs to address cybersecurity risks from Anthropic's AI model Claude Mythos Preview, which experts warn could enhance cyberattacks. The meeting follows a Pentagon dispute with Anthropic over its technology use in autonomous weapons and surveillance.

Treasury Secretary Scott Bessent and Federal Reserve Chair Jerome Powell convened Wall Street CEOs for an emergency meeting to address cybersecurity risks from Anthropic's new AI model, Claude Mythos Preview, which can autonomously identify software vulnerabilities. The meeting focused on mitigating threats to the global financial system amid tensions between Anthropic and the Pentagon over its technology use in military applications.

Anthropic has decided to delay the public release of its new AI model, Claude Mythos Preview, due to safety concerns. The model will instead be made available to select technology firms such as Microsoft, Apple, CrowdStrike, and Amazon Web Services.

Anthropic has launched its new cybersecurity AI model, Claude Mythos Preview, to select customers including Amazon, Apple, and Microsoft, as well as vetted organizations like Broadcom, Cisco, and CrowdStrike. The company is also discussing its use with the US government following a data leak incident last month.