Ransomware Leak
medusa
Concremat constructions
Data leak attributed to medusa, first discovered on 2023-06-05. Approximately 6,108 records were reported exposed.
Threat group
medusa
Records exposed
6,108
Discovered
2023-06-05
Country
Unknown
Indexed
2025-07-08
Website
concremat.com.br
Source ID
6742
About this leak
Founded in 1972 and headquartered in Rio de Janeiro, Concremat Companies provides construction and engineering services. The company offers services such as urban and regional development studies, environmental management systems, and a sustainable development plan for territories
What is inside this leak sample
Indexed records
6,108
With email
•••
ID documents
•••
File types
•••
Corporate vs personal email
96.23% corporate · 3.77% personal
Top corporate email domains
% of corporate emails
santander.com.br
34.61%
concremat.com.br
10.95%
6 more hidden ·
Enterprise
Analysed 2026-09-01
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