This record tracks a ransomware attack claimed by the
blackbyte group against
Chambersburg Area School District. 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.
-61days
t1 · Published
t2 · Disclosed
Business Category
Education
Published
September 07, 2023
Disclosed / Notified
Jul 09, 2023
Attack Summary
casdonline.org is the official website of Chambersburg Area School District, a public education district in Franklin County, Pennsylvania. The district serves multiple schools, supports classroom technology services, and provides district information, family resources, and student programs through its site. Its online presence reflects a K-12 education organization serving students, staff, and families in the Chambersburg area. It was listed as a ransomware victim associated with BlackByte.
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 casdonline.org
— indexed by HaveIBeenRansom.
4
found in Infostealer logs
2,975+
found in Traditional breaches
25+
found in Ransomware leaks
Canva_BF_.7z.001
Database World ROC · breach
••• emails
VerificationsIO_BF.7z.011
Kedr | Forum · breach
••• emails
McGraw Hill, Inc. (mheducation.com)
shinyhunters · breach
••• emails
Canva_BF.7z
B F R e p o V 3 F i l e s · breach
••• emails
pureincubation-com.7z.001
Database World ROC · breach
••• emails
Apollo.io DB 816millions.rar
Database World ROC · breach
••• emails
Edmodo_BF.7z
Formaceft db · breach
••• emails
Cit0day [cit0day.in] breaches.csv
LKnet reserve chat · breach
••• emails
+ 17 more leak sources locked
Leak volumes are locked
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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.