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Chainalysis Confirms October Data Breach Exposes Customer Data

1 reports1 sources10/31/2026 updated

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Blockchain analytics firm Chainalysis confirmed in October that it suffered an external cyberattack, resulting in the leak of customer names, email addresses, and organizational role labels. The company clarified that investigation data, authentication keys, and transaction outcomes were not accessed, and advised users to enable two-factor authentication to protect against abnormal password reset or login prompts.

Written with AI from the reporting · updated 10/31/2026

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  1. 1Unclassified fact stationNov 1, 01:12single sourcereport-time onlyrevised

    Chainalysis 数据泄露暴露客户姓名、邮箱与角色标签

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    Evidence & revisions · 1 source records
    Occurred (fact side):
    not recorded
    CryptoSlate ↗Report pageRevision 2 · currently revised
    Published (valid side):
    Nov 1, 00:45
    First seen (known side):
    Nov 1, 01:12
    Fact stationSingle source · one-sided claimRevisedReport-time only

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Nov 1
  1. CryptoSlateRelated fact: single sourceFact occurrence time unverifiedSource report revised
    Chainalysis confirms unauthorized access to customer data in October breach

    Report first recorded Nov 1, 01:12

    Chainalysis disclosed that an external actor gained unauthorized access to its systems in October 2026, exposing customer names, email addresses, user IDs and organization role labels. The company stated no evidence was found of access to investigation content, authentication secrets, or transaction results, and is working with third-party cybersecurity experts to determine the full scope of affected records.

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