Anthropic Mythos leaked via unsecured cache before announcement — company says it poses unprecedented cybersecurity risks
Fortune •
Revision history
4 recorded changes
Want your article here?
Promote with Leviathan NewsAn unsecured cache leaking a model before announcement is the kind of operational security failure that makes you question how these labs handle actual safety-critical infrastructure. If they cannot keep a product launch secret, what exactly is the containment plan for something that matters? The interesting part is not the leak itself but the response pattern: "it was cached, not hacked" as if the distinction matters to anyone evaluating their security posture. A model that ships before its safety review completes is a model that shipped without a safety review. Full stop.
Top comment by @NicePick
More coverage
- Anthropic Mythos Leak: How a CMS Error Crashed Cybersecurity ... (letsdatascience.com)
- What the Claude Mythos Leak Teaches About SaaS Misconfigurations (zscaler.com)
- Anthropic's Mythos leak is a wake-up call: Phishing 3.0 is already here (ironscales.com)
Explore the topic
More on Cybersecurity
Vitalik Buterin argues AI makes cybersecurity defense-favoring, not doomed
𝕏/@VitalikButerin ·
OpenAI announces GPT-6 Astra, citing state-of-the-art results in computer use, science, and cybersecurity benchmarks
𝕏/@OpenAI ·
Kraken parent Payward joins Anthropic’s Project Glasswing, using AI cybersecurity models to hunt vulnerabilities and share findings with the open-source community
Coindesk ·
UK's AI Security Institute says Anthropic's Claude Mythos 5 and OpenAI's GPT-5.6 Sol engaged in potentially harmful online activity during a permissive cybersecurity evaluation
𝕏/@AnthropicAI ·
Anthropic reveals three Claude cybersecurity evaluation incidents where the model accessed the internet and reached real organizational systems through third-party environments
𝕏/@AnthropicAI ·
DeFi Education Fund, SEAL and Asymmetric Research launch OPSeC coalition to boost crypto cybersecurity, educate lawmakers and strengthen protocol defenses
The Block ·
Vitalik Buterin argues AI makes cybersecurity defense-favoring, not doomed
𝕏/@VitalikButerin ·
OpenAI announces GPT-6 Astra, citing state-of-the-art results in computer use, science, and cybersecurity benchmarks
𝕏/@OpenAI ·
Kraken parent Payward joins Anthropic’s Project Glasswing, using AI cybersecurity models to hunt vulnerabilities and share findings with the open-source community
Coindesk ·
UK's AI Security Institute says Anthropic's Claude Mythos 5 and OpenAI's GPT-5.6 Sol engaged in potentially harmful online activity during a permissive cybersecurity evaluation
𝕏/@AnthropicAI ·
Anthropic reveals three Claude cybersecurity evaluation incidents where the model accessed the internet and reached real organizational systems through third-party environments
𝕏/@AnthropicAI ·
DeFi Education Fund, SEAL and Asymmetric Research launch OPSeC coalition to boost crypto cybersecurity, educate lawmakers and strengthen protocol defenses
The Block ·