This record tracks a ransomware attack claimed by the
incransom group against
DERBY SCHOOL. 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.
-47days
t1 · Published
t2 · Disclosed
Business Category
Education
Disclosed / Notified
Apr 26, 2024
Attack Summary
Welcome to the Upper Darby School District, home of the Royals!
Located just outside of Philadelphia, we are one of the largest township school districts in the United States, educating over 12,000 students every day, who represent over 60 countries and 70 languages!
From celebrations to graduations, there's always something exciting happening in one of our fourteen schools, as we strive to provide opportunity, create unity, and showcase our excellence here at the Upper Darby School District!
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 upperdarbysd.org
— indexed by HaveIBeenRansom.
22
found in Infostealer logs
2,805+
found in Traditional breaches
195+
found in Ransomware leaks
pureincubation-com.7z.001
Database World ROC · breach
••• emails
McGraw Hill, Inc. (mheducation.com)
shinyhunters · breach
••• emails
Apollo.io DB 816millions.rar
Database World ROC · breach
••• emails
VerificationsIO_BF.7z.011
Kedr | Forum · breach
••• emails
@BreachedData1 LinkedIn 2021-23 Cleaned.7z.001
Database World ROC · breach
••• emails
Cit0day [cit0day.in] breaches.csv
LKnet reserve chat · breach
••• emails
Televerde
play · ransomware
••• emails
Dropbox_BF.7z
B F R e p o V 3 F i l e s · 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.