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EngadgetApr 22, 2026
Anthropic is investigating 'unauthorized access' of its Mythos cybersecurity tool
Anthropic is investigating potential "unauthorized access" to its Claude Mythos model that has been touted for its ability to find cybersecurity flaws, the company told Bloomberg. A group gained access to the model through a third-party contractor portal and by using internet sleuthing tools, according to the report. However, the group is only interested in trying the models and not using them maliciously, according to a person familiar with the matter. 

"We're investigating a report claiming unauthorized access to Claude Mythos Previous through one of our third-party vendor environments," Anthropic said in a statement. 

The Claude Mythos Preview arrived earlier this month as part of "Project Glasswing" with significant fanfare. Anthropic limited the preview release to a small number of trusted test companies including Amazon, Microsoft, Apple and Cisco. Another was Mozilla, which said the model helped it find and patch 271 Firefox vulnerabilities. A growing number of banks and government agencies have been seeking access as well in order to safeguard their own systems. 

However, several unauthorized users (who reportedly have a private chat on Discord), supposedly gained access to Mythos through a developer portal and by making an educated guess as to where the model might be loca


ResearchBuzzApr 22, 2026
Taliban Activities, TwitchCon Rotterdam, National Archives of India, More: Wednesday Afternoon ResearchBuzz, April 22, 2026
NEW RESOURCES Kabul Now: Taliban Launch New Website to Share Information on Their Activities. "The Taliban have announced that they have launched a new website named ‘Permukhtag' to provide information about the […]
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