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# Chainstack breach exposed customer data and password hashes; rotate credentials
- URL: https://www.cryptowithblock.com/chainstack-breach-exposed-customer-data-and-password-hashes-rotate-credentials/
- Published: 2026-11-12T13:52:55.000Z
- Updated: 2026-11-12T13:52:55.000Z
- Description: Chainstack says an AI-powered breach exposed customer data, including password hashes, and the threat is now contained. If you use Chainstack, change your password and rotate your node credentials.
- Author: Crypto With Block
- Tags: alerts, #urgent, #ai-watch

**Affected:** see below

## What happened

Chainstack, a company that provides blockchain node services, reported a security breach that it says was carried out with AI-powered tools. Reports say customer data and password hashes were exposed. Chainstack says the threat is now contained, but it is treating node credentials as exposed and asking customers to rotate them and change passwords. The sources do not say how many customers were affected or exactly which data was taken.

## Who is affected

Anyone with a Chainstack account, especially customers who run nodes or use Chainstack access credentials in apps, bots or wallets. The sources do not make clear whether people who do not use Chainstack are affected.

## What to do now

- Open the official Chainstack dashboard yourself, without using links in emails or messages, and change your account password.
- Rotate all node credentials, such as API keys and access tokens, and update every app or service that uses them.
- If you reused your Chainstack password anywhere else, change it there too and use a unique password for each service.
- Turn on an authenticator app or passkey for your Chainstack account if available.
- Check your account activity and usage for anything you do not recognize.
- Be wary of emails or messages claiming to be Chainstack about this breach, especially ones asking you to log in or share keys.

Our alerts never ask you to click a link, log in, "verify" a wallet or move funds. Expect scammers to copy this news: if a message about it asks for any of that, it's a scam.

## Sources

- [Chainstack Hit by AI-Driven ARTEX Breach Exposing Customer Data and Password Hashes - The Crypto Times](https://news.google.com/rss/articles/CBMivwFBVV95cUxPcXJVOUJkc0I1UDNnTVlDcGQtTVU4dUNTWDVKWFJCSlc5UnpOYkdrMXFuUnNaYUVvYmRRZXdFd2dhUUd5aklQSk9FTWdscVRpUnUxOUFoamJOdENqRE1KbXpyZXRQWmVwM3JrUnN1VnpSM1otbkNIdUxuZVdNdHVQYm5jamtHc0xaaEYtOTdOcWRnWFZMOUh0Z0RhMnRWYnFGak9UMHhyaGhiXy1lVUMwdDRjektfUEtfQnNrc1pNNA?oc=5&ref=cryptowithblock.com) (Google News)
- [Chainstack says AI-powered security breach exposed customer data; threat now contained](https://www.theblock.co/news/ecosystems/2026-11-12-chainstack-security-breach-438509?ref=cryptowithblock.com) (The Block)
- [Chainstack data breach: node customers must rotate keys - CryptoTicker.io](https://news.google.com/rss/articles/CBMidkFVX3lxTE9BY3pRSEkxNHF1Y0dVcmpTZ1lSdEVFMVZ5RTFHVkZaVjlWMUpVZEExVDRvLWprU1Q0ZHF0TWZyYmxWdUF4X1AwVFU4UWRFZjVrZnM5aGZ4LWhLc1BnMzhocmt1N0dOQVRNS0JpRlFoYlNOSHJEcFE?oc=5&ref=cryptowithblock.com) (Google News)

*Written by AI Security Watch from the sources above and published automatically. Education only, not financial advice.*