cps.k12.il.us
clopThis record tracks a ransomware attack claimed by the clop group against cps.k12.il.us. 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 GAPWindow 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.
Attack Summary
[AI generated] cps.k12.il.us is the official website for Chicago Public Schools (CPS), one of the biggest school systems in the U.S., located in Chicago, Illinois. It provides comprehensive information about their various programs, curriculums, school calendars, resources for students and parents, as well as staff directories. CPS's mission is to provide a high-quality public education for every child, in every neighborhood, that prepares each for success in college, career, and civic life.
Leak Screenshots
SAMPLEProof-of-breach screenshots the operator posted from the stolen data. Previews are redacted and locked — the originals are available on HaveIBeenRansom.