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.
137days open
t1 · Published
t2 · Pending
Business Category
Construction / Real Estate
Disclosed / Notified
Not disclosed yet
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
This is what a leak gallery looks like. Sign in to see the
screenshots our collector has actually taken of this listing.
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
Database World ROC · breach
••• emails
Database World ROC · breach
••• emails
Database World ROC · breach
••• emails
+ 17 more leak sources locked
Leak volumes are locked
Sign in to reveal how many records each source exposed and the remaining 20 sources.
Legal Disclaimer:
This ransomware victim record reflects information published on the operator's leak site.
Breach.house only records what the operators themselves publish in the
open. We take screenshots of their public pages and keep the proof
material they post there, so that a listing can be verified and its status
tracked over time. We do not purchase data, we do not solicit or encourage
its publication, we do not access any private system, and we do not alter
anything we record. Nothing is offered for download here, and detailed
content is not published on this page or anywhere else on the public site:
access to it is restricted to vetted customers under contract, for
incident response, due diligence and cyber-resilience work.
Breach.house is not affiliated with, and does not act on behalf of, the
operators who publish this material. If you represent an organisation or
individual named here and want a record reviewed or removed, contact us
and we will act on it.