This record tracks a ransomware attack claimed by the
qilin group against
Kolin Turkey. 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.
-31days
t1 · Published
t2 · Disclosed
Business Category
Construction / Real Estate
Disclosed / Notified
Mar 22, 2026
Attack Summary
The organization Kolin Turkey appears on the qilin ransomware leak site. It operates in the Construction / Real Estate sector and is estimated to employ around +1000 people. The affected entity is based in Türkiye. The incident was first observed on April 21, 2026. Breach House tracks this attack from public ransomware leak-site postings for threat-intelligence purposes.
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 kolin.com.tr
— indexed by HaveIBeenRansom.
13
found in Infostealer logs
1,016+
found in Traditional breaches
5+
found in Ransomware leaks
pureincubation-com.7z.001
Database World ROC · breach
••• emails
Apollo.io DB 816millions.rar
Database World ROC · breach
••• emails
contacts_100.csv
Database World ROC · breach
••• emails
contacts_97.csv
Database World ROC · breach
••• emails
contacts_102.csv
Database World ROC · breach
••• emails
contacts_101.csv
Database World ROC · breach
••• emails
@BreachedData1 LinkedIn 2021-23 Cleaned.7z.001
Database World ROC · breach
••• emails
contacts_95.csv
Database World ROC · breach
••• emails
+ 17 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.