This record tracks a ransomware attack claimed by the
interlock group against
Clarksville ISD. 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.
261days open
t1 · Published
t2 · Pending
Business Category
Education
Published
December 18, 2025
Disclosed / Notified
Not disclosed yet
Attack Summary
clarksvilleisd.net operates within the Education sector and serves the Clarksville, United States region, providing district-level services and digital infrastructure relevant to educational administration and student support. As cataloged in this threat-intelligence index under the ransomware victim listing type, the entity is linked to the threat actor interlock. This designation reflects its inclusion in cybersecurity records tied to malicious activity targeting education infrastructure. The description adheres strictly to verified index metadata without extrapolating unconfirmed incident details, operational specifics, or unverified claims regarding breach scope or impact.
Leak Screenshots
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Dark Web Exposure
Findings for clarksvilleisd.net
— indexed by HaveIBeenRansom.
0
found in Infostealer logs
354+
found in Traditional breaches
4+
found in Ransomware leaks
VerificationsIO_BF.7z.011
Kedr | Forum · breach
••• emails
AntiPublic_BF.7z
B F R e p o V 3 F i l e s · breach
••• emails
MySpace_BF.7z
B F R e p o V 3 F i l e s · breach
••• emails
Exploit.in.rar
LKnet reserve chat · breach
••• emails
McGraw Hill, Inc. (mheducation.com)
shinyhunters · breach
••• emails
TheUnderground - Reborn · breach
••• emails
Database World ROC · breach
••• emails
B F R e p o V 3 F i l e s · breach
••• emails
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