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Chainalysis says some information on all users was exposed in cyberattack

Chainalysis said Wednesday night that some information belonging to all of its users was exposed in a cyberattack.

Written by a model from the sources below. Verify against them.

Sources8Confirmed
Vendor
Chainalysis
Status
Confirmed
Disclosed
Data taken
Names, Email addresses, Password hashes, Tokens and keys

Summary

According to the report, the company's website says its users include those in the law enforcement and national security sectors.

What to do

  • Change your password there and anywhere you reused it, and turn on multi-factor authentication

    For password hashes
  • Rotate API keys and tokens you gave it, and review the OAuth apps and integrations connected to it

    For tokens and keys
  • Expect phishing that uses this breach; verify messages that mention it

    For email addresses
  • Review your Chainalysis account for unfamiliar logins or activity

  • Change your Chainalysis password and rotate any linked API keys

  • Enable multi-factor authentication on your account

Timeline

  1. Made public by The Record2 days
  2. First seen by cve.now1 day
  3. Confirmed by Chainalysis

    The Record: “In its latest update , posted Wednesday night, the company said it had discovered “certain customer information including names, usernames, password hashes and…”

  4. Record last updated

What was taken

TakenPer the source
Names, Email addresses, Password hashes, Tokens and keysMastodon: “A recent Chainalysis breach has raised security concerns, exposing sensitive information including usernames, password hashes, live tokens, and personal data s…”

Evidence 8

  1. Social
    Mastodon
    “https://www. securityweek.com/chainalysis-d iscloses-data-breach-following-ai-driven-cyberattack”
  2. Social
    Bluesky
    “Chainalysis Discloses Data Breach Following AI-Driven Cyberattack”
  3. Press
    The Record
    “Chainalysis, the blockchain analytics company, said Wednesday night that some information belonging to all its users — which its website says include those in the law enforcement and national security sectors — had been exposed in a cyberattack.”
  4. Social
    Bluesky
    “Chainalysis Discloses Separate October 30 Security Incident Involving User Data”
    +1 more: Bluesky
  5. Social
    Bluesky
    “Chainalysis discloses breach by attacker using 'offensive agentic techniques'; customer names and emails accessed”
Show all 8 sourcesShow fewer sources
  1. Social
    Bluesky
    “Chainalysis confirms security breach affecting its entire user base.”
  2. Social
    Mastodon
    “🗞 Chainalysis warns all users hit in cyber breach involving ‘agentic’ techniques via The Record”
  3. Social
    Mastodon
    “A recent Chainalysis breach has raised security concerns, exposing sensitive information including usernames, password hashes, live tokens, and personal data such as user IDs, full names, and email addresses.”

Corrections

None so far.

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Questions about the Chainalysis breach

Was Chainalysis breached?

Yes. Chainalysis says so: “In its latest update , posted Wednesday night, the company said it had discovered “certain customer information including names, usernames, password hashes and live tokens for all Chainalysis users were exposed to a malicious actor.”” (The Record).

What data was exposed?

Names, Email addresses, Password hashes, Tokens and keys.

What should Chainalysis customers do?

Change your password there and anywhere you reused it, and turn on multi-factor authentication. Rotate API keys and tokens you gave it, and review the OAuth apps and integrations connected to it. Expect phishing that uses this breach; verify messages that mention it. Review your Chainalysis account for unfamiliar logins or activity. Change your Chainalysis password and rotate any linked API keys. Enable multi-factor authentication on your account.