Dataset Attributed to 51.com
This record describes a dataset attributed to 51.com and xx5.com, but the attribution has not been independently verified. The source date of 9 August 2019 is a data snapshot date consistent with the newest timestamps in the SQL; it is not a proven access, exfiltration, or public disclosure date.
Exposed Data Types
1- Email addresses
About This Record
The complete SQL file was parsed using the source-authored column explicitly named user_email. Import scope is limited to 4,219,301 unique canonical email associations from that column; no other fields were imported. This measure must not be interpreted as unique people, affected accounts, or the total scope of an incident.
Checks performed on 13 August 2026 found no matching entry for 51.com, 51com, or xx5.com in the public breach source or XposedOrNot catalogues. Absence from those catalogues does not prove that no incident occurred, while possession of the dataset alone does not establish company responsibility or an incident date.
Verification and editorial method
LeakData compares the incident name, date, affected-record count, and exposed data types with accessible sources. Unverified fields are not presented as facts, and records are updated when new evidence becomes available.
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