# Chainalysis says hackers stole credentials and tokens for all of its customers

- URL: https://talkfuse.com/story/chainalysis-says-hackers-stole-credentials-and-tokens-for-all-of-its-customers/
- Published: 2026-11-06T20:56:41+00:00
- Updated: 2026-11-06T21:48:41+00:00
- Original publisher: Ars Technica
- Original article: https://arstechnica.com/security/2026/11/chainalysis-says-hackers-stole-credentials-and-tokens-for-all-of-its-customers/
- Topics: AI, Business, Companies, Cybersecurity, Technology

## Key points

- Hackers exposed credentials and tokens for all Chainalysis users.
- Some services were taken offline as the company investigates.
- Customers must reset credentials when access is restored.

## Summary

Chainalysis says hackers exposed names, usernames, password hashes and live access tokens belonging to all users of the blockchain analysis firm. The breach could put customers at risk because Chainalysis serves government agencies and major companies, though the company says it has found no evidence that investigation data was accessed or attribution data altered.

The attack began in October and involved AI agent-assisted techniques, as well as an on-path attack that exposed some customer passwords. Chainalysis took several services offline, began restoring access to some customers and requires users to reset their credentials; it has not explained where the on-path compromise occurred or why disclosure of the wider exposure came two days after investigators found it.

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Summarised by TalkFuse (https://talkfuse.com/). Quote the original publisher for the reporting and link this page for the summary and discussion.