Corsicana Independent School District

Corsicana Independent School District

Data Breach on March 26, 2025
Data Breach Report
Victimcisd.org
Threat ActorRansomhub
Date DiscoveredMar 26, 2025
DescriptionCorsicana Independent School District is a public school district located in Corsicana, Texas, serving students from pre-kindergarten through 12th grade.
Leak Size65GB

Credential Exposure for cisd.org

We've indexed 1,376 @cisd.org accounts from external breaches, plus 10 credentials for cisd.org itself.

Last checked Aug 16, 2026

@cisd.org addresses from external breaches
Third-party breaches1,320 accounts · across 145 breaches · 1,001 with a plaintext password · most recent Jan 8, 2026
Combo lists536 accounts · most recent Aug 7, 2026
Passwords for cisd.org accounts
Combo lists8 logins · most recent Aug 5, 2026
Infostealer logs2 logins · 1 infected devices · most recent Oct 6, 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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