Breachesby GlyphCoinbase
Disclosed Dec 11, 202532 affectedConfirmed
Coinbase confirms contractor improperly accessed data of about 30 customers
Coinbase confirmed that a single support contractor improperly accessed information of roughly 30 customers, including contact details, KYC data, balances and transaction history, after screenshots of its support tool leaked on Telegram. Affected users were notified.
What is known
| People affected | 32 (as reported by the organization) |
|---|---|
| Disclosed | Dec 11, 2025 |
| Discovered | Dec 2025 |
| Happened | Nov 18, 2025 |
| Attack | Insider |
| Data exposed | NamesEmailsPhone numbersDates of birthGovernment IDsFinancial |
| Sector | Crypto · US |
| Status | Confirmed |
Sources
Notices filed
Other breaches at Coinbase
Bribed support contractors leak Coinbase customer data, $20M extortionInsider exposed names, addresses, emails, phone numbers, Social Security numbers, financial details, government IDs and internal documents. Reported to the California AG.Insider69K affectedCryptoUSMay 14, 2025Breach, details not statedBreach notice filed with the California AG, details not stated.6,159 affectedFinanceUSSep 27, 2021
History of this record
press to officialby backfillSource
https://www.bleepingcomputer.com/news/security/coinbase-confirms-insider-breach-linked-to-leaked-support-tool-screenshots/ to https://www.in.gov/attorneygeneral/consumer-protection-division/id-theft-prevention/files/DB-Year-to-Date-Report-2025.pdfby backfillSource
disclosed to confirmedby backfillSource
empty to in-agby backfillSource
0 to 1by backfillSource
30 to 32by backfillSource
2026-02-03 to 2025-12-11by backfillSource
empty to 2025-11-18by backfillSource
First recordedby seedSource
First seen 2026-09-25 (Research), confirmed by Indiana AG. Record counts are as reported. Not legal advice.