This record tracks a ransomware attack claimed by the
clop group against
CPS.EDU. It collects the publicly disclosed attack details — sector, location and
timeline — as published on the operator's leak site and indexed by Breach House.
Window Zero
EXPOSURE GAP
Window Zero is the time the breach stayed in the open before
anyone said so — the gap between when the attack was first discovered
on the operator's leak site (t1) and when it was publicly disclosed (t2).
The wider this window, the longer victims, staff and customers were exposed with no warning.
-39days
t1 · Published
t2 · Disclosed
Business Category
Education
Published
January 24, 2025
Disclosed / Notified
Dec 17, 2024
Attack Summary
[AI generated] CPS.EDU refers to Chicago Public Schools (CPS), one of the largest public school districts in the U.S., serving over 355,000 students in 642 schools. It provides comprehensive educational programs, including traditional, magnet, charter, and special education for students from preschool through high school. The district also offers programs for English language learners and special needs students. CPS is committed to improving public education and preparing students for their future.
Leak Screenshots
SAMPLE
Proof-of-breach screenshots the operator posted from the stolen data. Previews are
redacted and locked — the originals are available on HaveIBeenRansom.
Dark Web Exposure
Findings for cps.edu
— indexed by HaveIBeenRansom.
5,743
found in Infostealer logs
2,772+
found in Traditional breaches
228+
found in Ransomware leaks
Canva_BF_.7z.001
Database World ROC · breach
••• emails
Apollo.io DB 816millions.rar
Database World ROC · breach
••• emails
Cit0day [cit0day.in] breaches.csv
LKnet reserve chat · breach
••• emails
VerificationsIO_BF.7z.011
Kedr | Forum · breach
••• emails
limeleads_breach.7z
TheUnderground - Reborn · breach
••• emails
Televerde
play · ransomware
••• emails
@BreachedData1 LinkedIn 2021-23 Cleaned.7z.001
Database World ROC · breach
••• emails
pureincubation-com.7z.001
Database World ROC · breach
••• emails
+ 17 more leak sources locked
Leak volumes are locked
Sign in to reveal how many records each source exposed and the remaining 20 sources.
Legal Disclaimer:
This ransomware victim record reflects information published on the operator's leak site.
Breach.house does not acquire, download, host, access or redistribute unlawfully obtained data. It indexes only publicly visible information posted by ransomware, breach and infostealer operators and open web sources, without accessing the underlying stolen content. The service supports public awareness, legitimate research and cyber-resilience.