Henneman

Henneman

Data Breach on October 15, 2024
Data Breach Report
Victimhenneman.com
Threat ActorPlay
Date DiscoveredOct 15, 2024
DescriptionHenneman is specializing in mechanical, electrical, and structural engineering.
Leak SizeUnknown

Credential Exposure for henneman.com

We've indexed 138 @henneman.com accounts from external breaches, plus 1 credentials for henneman.com itself.

Last checked Aug 16, 2026

@henneman.com addresses from external breaches
Third-party breaches137 accounts · across 63 breaches · 120 with a plaintext password · most recent Nov 13, 2024
Combo lists51 accounts · most recent Aug 7, 2026
Passwords for henneman.com accounts
Combo lists1 logins · most recent Oct 7, 2025

Logins may belong to customers or to staff, and the data doesn't say which. None of this is necessarily connected to the ransomware attack above.

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