---
title: "Coinbase security incident"
description: "What the retained public evidence establishes about the Coinbase incident, its attack path, impact, and response."
incident_type: "Cybersecurity incident"
status: "active"
last_modified: "2026-09-19"
canonical_url: "https://www.ally.security/incidents/coinbase-security-incident-2025"
markdown_url: "https://www.ally.security/incidents/coinbase-security-incident-2025.md"
stix_url: "https://www.ally.security/incidents/coinbase-security-incident-2025/stix.json"
---

# Coinbase security incident

The retained public source describes the Coinbase incident as Insider threat: bribed overseas contracted customer-support agents exported customer data. Other material details remain unresolved.

Last modified Sep 19, 2026 · 1 source

## Summary

- **Environment:** Cryptocurrency exchange
- **Operational impact:** The reviewed source does not establish a precise operational or data impact
- **Financial impact:** Est. $180-400M remediation/reimbursement cost

## What happened

In May 2025, Coinbase experienced an incident in its cryptocurrency exchange environment. The retained source describes the attack path as follows: Insider threat: bribed overseas contracted customer-support agents exported customer data. [1](#source-1)

## Impact

- The reviewed source does not establish a precise affected-person count, data scope, or operational consequence.
- Documented financial consequence: Est. $180-400M remediation/reimbursement cost. [1](#source-1)

## Threat Group & Attack Vector

The retained source describes the attack path as follows: Insider threat: bribed overseas contracted customer-support agents exported customer data. The canonical record does not add intrusion steps beyond those supported by the source. [1](#source-1)

### Actors

- No threat actor group has been identified in the reviewed public evidence.

### TTPs

- No specific MITRE ATT\&CK technique is currently mapped for this case.

## Response

The retained source reports coordination with law enforcement as part of the incident response. [1](#source-1)

This account is bounded to [Coinbase Form 8-K](https://www.sec.gov/Archives/edgar/data/1679788/000167978825000094/coin-20250514.htm). Details absent from that evidence are left unresolved rather than inferred. [1](#source-1)

## Assets

[Download the case-scoped STIX 2.1 bundle](<https://www.ally.security/incidents/coinbase-security-incident-2025/stix.json>)

## Sources

Primary source records used to research this incident.

<a id="source-1"></a>

### Coinbase Form 8-K

regulatory · U.S. Securities and Exchange Commission

<https://www.sec.gov/Archives/edgar/data/1679788/000167978825000094/coin-20250514.htm>

<details>
<summary>Evidence ledger</summary>

Review the supporting structured claims.

1. **Resulted In · 100% confidence · current**  
   Coinbase security incident: The reviewed source documents the coinbase security incident involving Coinbase.
2. **Resulted In · 90% confidence · current**  
   Coinbase security incident: The retained source reports coordination with law enforcement as part of the incident response.
3. **Affected Organization · 100% confidence · current**  
   Coinbase security incident: Coinbase
4. **Resulted In · 92% confidence · current**  
   Coinbase security incident: Est. $180-400M remediation/reimbursement cost.
5. **Resulted In · 85% confidence · current**  
   Coinbase security incident: Insider threat: bribed overseas contracted customer-support agents exported customer data.

</details>