Mail. ru Data Breach History

This page tracks the Mail. ru data breach history and cybersecurity incidents affecting Mail. ru (Russia). BreachHistory currently indexes 2 publicly disclosed or catalogued incidents spanning 2016, with approximately 82.0 million records reported as exposed across all indexed events. These totals may include overlapping datasets or third-party estimates and should not be interpreted as unique affected users.

The Mail. ru breach timeline includes major data breaches, cyber attacks, data leaks, credential exposures, API abuse, and other security incidents. Each incident provides details on the estimated records exposed, attack method, affected data types, and supporting public sources. Currently, 0 incidents are company-confirmed, while 1 remain unverified claims pending independent verification.

Largest Mail. ru Data Breaches

The largest indexed incidents include the 2016 Mail.ru — 57M credentials in criminal forums and the 2016 — Mail. ru: Two hackers attacked three game-related forums…. Record counts originating from threat actors or leak sites should be treated as estimates unless confirmed by Mail. ru or a regulator. Below is the list of large data breaches:

• 2016 2016 Mail.ru — 57M credentials in criminal forums — about 57.0M records exposed · Unverified claim
• 2016 2016 — Mail. ru: Two hackers attacked three game-related forums… — about 25.0M records exposed · Catalogued incident

What Information Was Exposed?

Depending on the incident, exposed data may include email addresses, passwords and login credentials, physical addresses, and other personal information (PII). The exact data varies between incidents, so review each breach page before assuming your information was affected.

Mail. ru Data Breach 2026

At the time of this update, no Mail. ru data breach has been catalogued for 2026. New incidents are added as official disclosures, regulatory filings, or credible cybersecurity reports become available.

What To Do If You Were Affected

If you believe your account may have been involved in a Mail. ru data breach, change any reused passwords, enable multi-factor authentication (MFA), monitor your account for suspicious activity, and be cautious of phishing emails or fake breach notifications.

This Mail. ru breach history is maintained by BreachHistory using public disclosures, regulatory filings, security research, and clearly labelled third-party claims. For the complete breach timeline, records exposed, incident details, and AI Breach Risk Score, explore the sections on this page.