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Data breach

Chainalysis breach exposes all users’ credentials

First reported · Last reported · 28 related reports

An external attacker accessed Chainalysis’s internal systems and tools, exposing customer names, email addresses, user IDs, and other information. The company disclosed the incident on October 30, notified customers, and launched an investigation with external experts, initially stating that it had found no evidence of unauthorized access to credentials or session tokens. It later confirmed that all users’ credentials and active tokens had been exposed, along with password hashes and some customers’ passwords. Major services were disrupted, and service restoration began on November 6.

Key facts

Affected organization
Chainalysis
Incident type
Data breach
Occurred / detected
Not confirmed
Scale of damage
Exposure of all users’ credentials and active tokens
Cause / method
Unauthorized access to internal systems and tools by an external attacker
Location
United States

If your data was exposed

Exposed dataNameEmailUsernamePassword

  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. Chainalysis disclosed the security incident, notified customers, and launched an investigation with external experts.
  2. The company confirmed the exposure of customer names, email addresses, user IDs, and roles within organizations, but said it had found no evidence of unauthorized access to credentials or session tokens.
  3. The exposure of all customers’ credentials and active tokens and the disruption of major services became known, and service restoration began.
  4. The exposure of password hashes and some customers’ passwords came to light, along with indications of abnormal access to the cryptocurrency transaction monitoring system.
  5. Service disruptions continued for two products.

28 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.