What happened?
In April 2023, the stolen identity marketplace Genesis Market was shut down by the FBI and a coalition of law enforcement agencies across the globe in "Operation Cookie Monster" . The service traded in "browser fingerprints" which enabled criminals to impersonate victims and access their online services. As many of the impacted accounts did not include email addresses, "8M" is merely an approximation intended to indicate scale. Other personal data compromised by the service included names, addresses and credit card information, although not all individuals had each of these fields exposed.
When did it happen?
The breach date in the public record is April 5, 2023. The record was added to the catalogue on April 5, 2023 and last updated there on April 5, 2023.
What information was reported as exposed?
- Browser user agent details
- Credit card CVV
- Credit cards
- Dates of birth
- Email addresses
- Names
- Passwords
- Phone numbers
- Physical addresses
- Usernames
These are incident-level categories. The record does not prove that every category was exposed for every affected person.
Who may be affected?
This record may be relevant to people who had an account or other relationship with Genesis Market or used genesis.market around April 5, 2023. A catalogue entry does not establish that every customer was affected or that every listed data category applied to each person. Compare the record with an official notice addressed to you.
What should you do?
Compare the organization, dates, and information categories with any notice you received. Use contact details you independently confirm.
Change exposed or reused passwords, begin with your email account, and turn on multi-factor authentication where available.
Review your credit reports and consider a free credit freeze if identity information could support new-account fraud.
Check statements for unfamiliar activity and contact the card issuer or financial institution through an independently verified channel.
Choose actions that match the information involved. If you find signs that someone is using your identity, the Federal Trade Commission provides a personal recovery plan at IdentityTheft.gov.
Sources and review information
- Have I Been Pwned breach catalogue record ↗
- Federal Trade Commission: What To Do After a Data Breach ↗
- Federal Trade Commission: Credit Freezes and Fraud Alerts ↗
Page reviewed September 14, 2026 by the Data Breach Help Editorial Team. Catalogue details reflect the provider record and may change.