SlowMist CISO: Hacker group ShinyHunters claims to have breached Anthropic’s internal systems; authenticity awaits official confirmation.

23pds, Chief Information Security Officer of SlowMist Technology, retweeted a post from the dark web intelligence account Dark Web Intelligence (@DailyDarkWeb), stating that the hacker group ShinyHunters claims to have breached internal systems related to Anthropic’s Mythos model and has shared screenshots—including those of the user management panel, AI experiment dashboard, and model performance and cost analysis. As of now, Anthropic has not officially confirmed the authenticity of this claim. Given that numerous enterprises have already applied for trial access to the relevant models, if this report proves true, it could pose indirect security risks to leading technology firms and crypto-related businesses.