Home / Incidents / Data breach
DeepSeek leaves chat logs exposed in open database
Wiz found an unauthenticated DeepSeek ClickHouse database holding more than a million log lines, including plain-text chat history and API keys; it was closed after disclosure.
- Organisation
- DeepSeek
- Disclosed
- 29 January 2025
- Affected
- Not stated
- Data
- Chat history, API keys, backend logs
- Attacker
- None (exposure)
- Severity
- major
- Region
- Global
- Source
- TechCrunch ↗
Cite this
Nuffield Consulting, “DeepSeek leaves chat logs exposed in open database”, The Daily Tech Wire outage & breach log, 29 Jan 2025. https://techwire.nuffieldconsulting.com/incidents/2025-01-29-deepseek-breach/ (retrieved 15 Nov 2026).
This entry summarises public reporting. Please also cite the original source: TechCrunch, https://techcrunch.com/2025/01/30/deepseek-exposed-internal-database-containing-chat-histories-and-sensitive-data.
Related incidents
- 30 Jan 2025CHC breach exposes 1 million Connecticut patientsCommunity Health Center · breach · Unknown · 1.1M records
- 26 Jan 2025Hacker claims 18.8 million TalkTalk recordsTalkTalk · breach · b0nd · 18.8M claimed
- 23 Jan 2025$85m stolen from Phemex hot walletsPhemex · breach · North Korea (suspected)
- 17 Jan 2025Otelier breach exposes Marriott, Hilton and Hyatt guestsOtelier · breach · Unknown
- 15 Jan 2025Law firm breach exposes 3.5 million peopleWolf Haldenstein · breach · Unknown · 3.5M records