This record tracks a ransomware attack claimed by the
qilin group against
stmg.org. 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.
379days open
t1 · Published
t2 · Pending
Business Category
Services
Indexed by Breach House
October 16, 2025
Disclosed / Notified
Not disclosed yet
Attack Summary
stmg.org is a Services sector entity located in the Netherlands. Publicly available information identifies it within threat-intelligence records as a ransomware victim associated with the threat actor qilin. The entity's operational context and sector classification provide contextual framing for its inclusion in the ransomware victim catalog. No specific incident details such as data stolen, records accessed, ransom demands, or confirmed breach specifics are included, per strict factual and neutrality constraints. This listing reflects the indexed relationship between stmg.org and qilin within the threat-intelligence framework.
Leak Screenshots
6 CAPTURED
Captured directly from the operator's leak site by our collector, last checked 2026-10-26. Verdict evidence: [M1] Published
Proof files published by the operator —
5 image(s) harvested from this entry.
Content is locked; type and dimensions shown.
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Dark Web Exposure
Findings for stmg.org
— indexed by HaveIBeenRansom.
16
found in Infostealer logs
253+
found in Traditional breaches
600+
found in Ransomware leaks
McKesson Corporation
shinyhunters · ransomware
••• emails
VerificationsIO_BF.7z.011
Kedr | Forum · breach
••• emails
Televerde
play · ransomware
••• emails
pureincubation-com.7z.001
Database World ROC · breach
••• emails
limeleads_breach.7z
TheUnderground - Reborn · breach
••• emails
Database World ROC · breach
••• emails
+ 17 more leak sources locked
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