… On April 7, Anthropic announced the Mythos in early preview and called it a new frontier model with strikingly advanced capabilities in computer security tasks. Anthropic said the Mythos model shows major improvements in code reasoning and autonomy, far above its current flagship model, Opus 4.7. …
… The researchers also recommend scanning ML model artifacts before runtime because loading public models with ‘trust remote code’ effectively means executing untrusted code. …
… The victims are convinced to run a malicious PowerShell command on their systems, which deploys the “ModeloRAT” malware. …
… The large language model LLM used for the malicious task remains unclear, but Google rules out the possibility that Gemini was involved in the process. …
… Some of these features, like OS verification, are launching on Pixel devices first or are limited to newer models, while others might be open to OEM adoption, so rollout timelines may vary widely across the Android ecosystem. …
… However, the core operational model is consistent.” Developers who downloaded any of the infected npm packages should uninstall them immediately, and rotate all secrets within reach of the infected systems. …
… In April 2026, Anthropic released its newest frontier model, codename Mythos , to twelve partners under a gated preview. Not general availability; the company explicitly held it back as it was correctly deemed too dangerous for open release. …