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Data breach

Chainstack development and production breach exposes customer account information

First reported · Last reported · 12 related reports

Chainstack said a cyberattack in late October 2026 exposed customer account information. The attacker entered the development environment through a third-party component before accessing some production systems and a customer account database. Organization names, account holder names, email addresses, and password hashes may have been exposed, and the company advised rotating credentials, including changing passwords and reissuing API keys, while treating node credentials as exposed as well. The company said the threat had been contained.

Key facts

Affected organization
Chainstack
Incident type
Data breach
Occurred / detected
2026-10
Scale of damage
Customer account information and node credentials; number of affected customers undisclosed
Cause / method
Intrusion into the development environment through a third-party component, followed by movement into some production systems
Location
Other countries

If your data was exposed

Exposed dataNameEmailPassword

  1. Change your password, and also change it on any other site where you use the same one. Turn on two-factor authentication if available.
  2. Don’t tap links in texts, calls or emails that mention this incident and offer compensation, refunds or breach checks. Check directly on the organization’s official website or app.

Timeline

  1. An intrusion into the development environment and some production systems, along with possible exposure of customer account information, came to light, and credential rotation was advised.
  2. Chainstack disclosed that the late-October attack had exposed customer information and that the threat had been contained.
  3. Exposure of a management tool was identified as the route of the customer data leak, and the need to rotate credentials was reiterated.

12 related reports

The summary and key facts are written by AI from related reports and may contain errors. Check the original articles and the organization’s official statements for accurate details.