Coinbase customer data stolen through paid overseas support staff
Coinbase disclosed on May 14, 2025 that an attacker paid multiple contractors or employees in support roles outside the United States to collect customer data from internal Coinbase systems, then demanded 20 million dollars not to publish it. Coinbase said no passwords or private keys were compromised and that the data was used to impersonate Coinbase and trick customers into sending funds.
- Victim
- Coinbase
- Industry
- Crypto and Web3
- Country
- United States
- Intrusion began
- Not disclosed
- First disclosed
- May 14, 2025
- Actor
- Financially motivated
- Initial access
- Insider misuse
- Identity control that failed
- Authorization
- MFA
- Not applicable (no interactive login)
- Abused identity
- Human account
- Records affected
- 69,461 (Individuals, per Coinbase's notice to the Maine Attorney General.)
- Disclosed cost
- Coinbase's Form 8-K of May 14, 2025 preliminarily estimated expenses of about USD 180 million to 400 million for remediation and voluntary customer reimbursements. Left null because it is a range, not a final figure.
The identity lesson
Each support agent could look up far more customer records than any one ticket needed. Least-privilege access to customer data, per-record justification and anomaly alerts on lookup volume are the controls against a bought insider.
Sources
- Coinbase Global, Inc. Form 8-K, U.S. Securities and Exchange Commission, May 14, 2025
- Coinbase data breach impacted 69,461 individuals, Security Affairs, May 21, 2025
Record verified Oct 31, 2026 against the sources above. Corrections: contact us.
Related incidents
- Ubiquiti data theft and extortion by insider with cloud admin credentials 2021 · Insider misuse
- Cash App Investing reports downloaded by former employee 2022 · Insider misuse
- UNC6040 voice phishing campaign against Salesforce customers 2025 · Consent phishing
- Bybit cold-wallet theft via hijacked Safe{Wallet} developer AWS sessions 2025 · Session or token theft
Cite this record
SWI Community Team. (2026). Coinbase customer data stolen through paid overseas support staff. Identity Breach Database, Start with Identity. https://startwithidentity.com/breaches/incidents/2025-coinbase-paid-support-insiders/
Part of the Identity Breach Database, free to reuse under CC BY 4.0. Analysis across every record: Identity Breach Report 2026.