Mistral denies a fresh security breach, but the code on sale looks a lot like May's leak
Mistral says the "stolen" code now on sale may simply be what walked out the door earlier in May 2026.
French AI firm Mistral AI claims to have been hacked a second time, offering what it calls its full source code for sale on a cybercrime forum. However, Mistral's own team disputes this, stating they found no evidence to support the claim. The seller, using the handle "mrwho", posted a listing on an English-language cybercrime forum, demanding the payment of Monero cryptocurrency.
The listing included pricing details and a request to direct potential buyers to Session or Telegram for further communication. While no customer data has surfaced in analyzed samples from the purported hack, several repository names from the May 2026 hack appear in the September listing, raising questions about the legitimacy of the claim.
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