Anthropic

7 breachesAIanthropic.com

Company profile

Breach	Disclosed	Attack	Sector	Status	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
DeepSeek, Moonshot and MiniMax used 24,000 fraudulent accounts to distill ClaudeFeb 237 months agoAI or model	Feb 237 months ago	AI or model	AI	Confirmed	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

About

Every breach here links to its sources and official notices. Across fru.dev: lawsuits, incidents and outages, the company profile.

2026-09-25 · Anthropic, 2024-01-29 · added
2026-09-25 · Anthropic, 2025-08-27 · added
2026-09-25 · Anthropic, 2025-11-13 · added
2026-09-25 · Anthropic, 2026-02-23 · added
2026-09-25 · Anthropic, 2026-07-27 · added
2026-09-25 · Anthropic, 2026-08-31 · added
2026-09-25 · Anthropic, 2026-03-31 · added

New breaches by email

Wednesdays, only in weeks with newly disclosed breaches, the largest first.