What happened?
In May 2023, a credential stuffing list of 6.3M Polish email address and password pairs appeared on a local forum . Likely obtained by malware running on victims' machines, each record included an email address and plain text password alongside the website the credentials were used on. The data included 1.2M unique email addresses.
When did it happen?
The breach date in the public record is May 29, 2023. The record was added to the catalogue on May 30, 2023 and last updated there on May 30, 2023.
What information was reported as exposed?
- Email addresses
- Passwords
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 Polish Credentials around May 29, 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.
Treat unexpected breach follow-ups with caution. Do not use links or phone numbers in a suspicious message; contact the organization directly.
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.