Anthropic
Disclosed Feb 23, 20267 months agoConfirmed
DeepSeek, Moonshot and MiniMax used 24,000 fraudulent accounts to distill Claude
Anthropic said three Chinese AI labs, DeepSeek, Moonshot and MiniMax, generated over 16 million exchanges with Claude through about 24,000 fraudulent accounts to extract its capabilities for training their own models, violating its terms and regional restrictions.
What is known
| People affected | Not stated in the sources we have |
|---|---|
| Disclosed | Feb 23, 2026 |
| Attack | AI or model |
| Data exposed | Training data, Other |
| Sector | AI · US |
| Status | Confirmed |
Sources
| Source | |
|---|---|
| Detecting and preventing distillation attacksanthropic.com · The organization | The organization |
Notices filed
| Where | Filed | People |
|---|---|---|
| Researchtotal | Feb 23 |
Other breaches at Anthropic
| Breach | Affected | ||||
|---|---|---|---|---|---|
| Infostealer-stolen session cookies used to hijack Claude accountsAug 313 weeks agoHackingUnverified | Aug 313 weeks ago | Hacking | AI | Unverified | Unknown |
| Shared Claude conversations appeared in Google search resultsJul 272 months agoExposed dataUnverified | Jul 272 months ago | Exposed data | AI | Unverified | Unknown |
| Claude Code source code accidentally published in npm packageMar 315 months agoExposed dataUnverified | Mar 315 months ago | Exposed data | AI | Unverified | Unknown |
| Chinese state group manipulated Claude Code to attack about 30 organizationsNov 13, 202510 months agoHacking | Nov 13, 202510 months ago | Hacking | AI | Confirmed | Unknown |
| Cybercriminal used Claude Code to steal and extort data from at least 17 organizationsAug 27, 20251 year agoExtortion | Aug 27, 20251 year ago | Extortion | AI | Confirmed | Unknown |
| Contractor mistakenly emailed file of customer names and credit balances to third partyJan 29, 20242 years agoInsiderUnverified | Jan 29, 20242 years ago | Insider | AI | Unverified | Unknown |
History of this record
- 2026-09-25 · added · seed source
First seen 2026-09-25 (Research), confirmed by Research. Record counts are as reported. Not legal advice.