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Unauthorized Discord users interacting with Anthropic’s Mythos AI tool, highlighting potential security risks in AI access an

Editorial illustration for Discord Users Access Anthropic's Mythos AI Tool Without Authorization

Hackers Breach Anthropic's Mythos AI Preview Tool

Discord Users Access Anthropic's Mythos AI Tool Without Authorization

Updated: 3 min read

Anthropic called its Mythos AI too dangerous to release. That was the official story. On Discord, a different narrative emerged.

A handful of users, sifting through a leaked dataset from the training startup Mercor, made a simple guess. They guessed where the model might live online. According to Bloomberg, they were right.

This wasn't a sophisticated hack. It was a deduction. Now, a tool designed to expose critical security flaws is itself exposed, its digital door barred by little more than a secret web address.

Discord Sleuths Gained Unauthorized Access to Anthropic's Mythos AI Tool Anthropic's Mythos Preview AI model has been touted as a dangerously capable tool for finding security vulnerabilities in software and networks, so powerful that its creator has carefully restricted its release. But one group of amateur sleuths on Discord found their own, relatively simple ways--no AI hacking required--to gain unauthorized access to a coveted digital prize: Mythos itself. Despite Anthropic's efforts to control who can use Mythos Preview, a group of Discord users gained access to the tool through some straightforward relatively detective work: They examined data from a recent breach of Mercor, an AI training startup that works with developers, and "made an educated guess about the model's online location based on knowledge about the format Anthropic has used for other models"--a phrase that many observers have speculated refers to a web URL--according to Bloomberg, which broke the story.

The perimeter failed. The model is fine, but its gate was a guessable URL. The irony is sharp.

Anthropic built a sophisticated AI to find the weakest link in any system. The weakest link in theirs, Bloomberg reports, was an old, dumb secret. The lesson isn't about a rogue AI.

It's about the human problem of hiding a key.

Common Questions Answered

How did Discord users gain unauthorized access to Anthropic's Mythos AI tool?

Discord users discovered relatively simple methods to bypass Anthropic's access restrictions without complex hacking techniques. The group of amateur sleuths managed to gain entry to the preview version of the Mythos AI model, which Anthropic had intentionally kept under tight controls due to its powerful security vulnerability detection capabilities.

Why did Anthropic describe the Mythos AI model as 'dangerously capable'?

Anthropic characterized Mythos as 'dangerously capable' because of its advanced ability to rapidly identify security vulnerabilities in software and networks. The model's potential for detecting critical security flaws was so significant that Anthropic initially limited access to only a handful of vetted partners to maintain control over its deployment.

What practical value has Mythos demonstrated in cybersecurity testing?

During Mozilla's early access testing, the Mythos AI tool helped identify 271 fixes for Firefox 150, demonstrating its substantial potential in proactively discovering and addressing software vulnerabilities. The incident highlights the tool's practical applications in cybersecurity while simultaneously raising questions about access control and potential misuse.

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