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Listed on a ransomware leak site

cps.k12.il.us

cps.k12.il.us

cps.k12.il.us was listed on the Clop leak site on Feb 10, 2025. Information as of Oct 19, 2026.

Updated continuously · figures as of Oct 19, 2026
Claimed by
Clop
First listed
Feb 10, 2025
Claims recorded
1

Leak-Site Claim.

ClopConfirmed claim
Posted on the leak site
Feb 10, 2025
Collected by Brandefense
Jul 12, 2025
Data claimed
Not stated
Leak-site post text, written by the group
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.

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INC RansomPLPolandEducation and ResearchNot stated

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Figures as of Oct 19, 2026. Confirmed leak-site claims collected by Brandefense technologies and validated by Brandefense analysts.

Listed on a leak site means a ransomware group has claimed the company; it is not a confirmed breach. To request a correction or removal, contact Brandefense.