This record tracks a ransomware attack claimed by the
killsec group against
Study Gate. 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.
-87days
t1 · Published
t2 · Disclosed
Published
September 25, 2025
Disclosed / Notified
Jul 01, 2025
Attack Summary
Study Gate is listed as a victim of the killsec ransomware operation. It operates in the Other sector. The affected entity is based in United States. The incident was first observed on September 25, 2025. Breach House catalogues this incident from publicly available leak-site data; no stolen files are hosted here.
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 studygate.com
— indexed by HaveIBeenRansom.
912
found in Infostealer logs
29+
found in Traditional breaches
0+
found in Ransomware leaks
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+ 2 more leak sources 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.