Traditional Breach
TheUnderground - Reborn
mail.ru_2014_4,2kk.csv
Data leak attributed to TheUnderground - Reborn, first discovered on 2025-04-28. Approximately 4,425,720 records were reported exposed.
Threat group
TheUnderground - Reborn
Records exposed
4,425,720
Discovered
2025-04-28
Country
RU
Indexed
2026-10-16
Source ID
eba3efc40197
What is inside this leak sample
Indexed records
4,425,720
With email
•••
ID documents
•••
File types
•••
Top corporate email domains
% of corporate emails
i.ua
17.71%
mail.ru.ru
9.38%
6 more hidden ·
Enterprise
File types present
csv
•••
Analysed 2026-10-18
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