Constellation Software

Constellation Software

Data Breach on May 05, 2023
Data Breach Report
Victimcsisoftware.com
Threat ActorALPHV
Date DiscoveredMay 05, 2023
DescriptionConstellation Software is a Canadian diversified software company.
Leak SizeUnknown

Credential Exposure for csisoftware.com

We've indexed 36 @csisoftware.com accounts from external breaches, plus 12 credentials for csisoftware.com itself.

Last checked Aug 16, 2026

@csisoftware.com addresses from external breaches
Third-party breaches35 accounts · across 24 breaches · 34 with a plaintext password · most recent Aug 18, 2024
Combo lists12 accounts · most recent Feb 5, 2026
Passwords for csisoftware.com accounts
Combo lists12 logins · most recent Aug 5, 2026
Infostealer logs6 logins · 3 infected devices · most recent Aug 3, 2026

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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