mmorg.net

In January 2020, a dataset containing more than 2.3 million email addresses and passwords tied to mmorg.net entered circulation. The listing holds 2,346,431 rows, with email addresses and passwords accounting for nearly all of the exposed information. No individual or group has claimed responsibility for the breach, and the exact circumstances of how the data was obtained remain unclear.

The estimated attack date is January 1, 2020. The investigation team indexed the listing on December 1, 2024, meaning the records surfaced publicly years after the suspected incident. Because the emails and passwords appear together in a large batch, the listing may be a credential compilation assembled from one or more sources rather than the result of a single confirmed hack of one company. That characterization cannot be confirmed from the available facts.

Limited public reporting: As of September 25, 2026, detailed company notices or major news coverage for this listing were limited in sources reviewed. The facts below rely primarily on the indexed fields plus any secondary sources cited.

What Information Was Compromised?

Our analysis found the following data types in this breach: email addresses and passwords.

Not every individual is affected by every type of data listed here.

The dataset contains passwords for roughly 2,343,763 of the 2,346,431 email addresses in the listing. No names, physical addresses, phone numbers, payment details, or government identifiers appear in the indexed fields. If the passwords were stored hashed or encrypted, their usefulness to attackers may vary, but the listing itself provides no detail on that point.

What Are the Potential Risks for Affected Individuals?

Email and password pairs are the raw material for several common attacks:

Credential stuffing. Attackers feed leaked email and password pairs into login forms at banks, shopping sites, and other services. Any password reused across accounts puts those accounts at risk.

Account takeover. If the exposed password still works on the account it belonged to, an attacker can log in directly and lock the real owner out.

Phishing. A valid email address is enough to craft convincing messages that appear to come from services the person actually uses.

Chain compromise. An email account is often the recovery path for other accounts. Someone who gains access to an inbox can trigger password resets elsewhere.

The risk grows with time. Records from a 2020 breach are often combined with newer dumps, so an old password may resurface in attacks years later.

What Should You Do If You Were Affected?

If your email address appears in this listing, take these steps:

Change the exposed password immediately, on the affected service and anywhere else you used the same password.

Use a unique password for every account. A password manager can generate and store them for you.

Turn on two-factor authentication where it is offered, especially for your primary email account.

Watch for phishing. Be skeptical of emails urging urgent logins, unexpected password reset notices, or messages asking you to verify account details.

Review account activity. Check sign-in histories and connected apps on accounts tied to the exposed email, and revoke anything unfamiliar.

Because the source of this dataset is not confirmed, people who had accounts on mmorg.net or who used that email address elsewhere should treat any matching password as burned and replace it everywhere it was used.