This record tracks a ransomware attack claimed by the
worldleaks group against
CH Karnchang Public. 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.
-41days
t1 · Published
t2 · Disclosed
Business Category
Construction / Real Estate
Disclosed / Notified
Apr 26, 2026
Attack Summary
[AI generated] CH Karnchang Public Company Limited is a major Thai construction and engineering conglomerate headquartered in Bangkok, Thailand. The company specializes in large-scale infrastructure projects including highways, expressways, dams, tunnels, and civil engineering works. It operates primarily in Thailand but also undertakes international projects. CH Karnchang is listed on the Stock Exchange of Thailand and is considered one of the country's leading construction firms.
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 ch-karnchang.co.th
— indexed by HaveIBeenRansom.
0
found in Infostealer logs
47
found in Traditional breaches
0
found in Ransomware leaks
Apollo.io DB 816millions.rar
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••• emails
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B F R e p o V 3 F i l e s · breach
••• emails
MalindoAir_BF.7z
TheUnderground - Reborn · breach
••• emails
Dropbox_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
contacts_120.csv
Database World ROC · breach
••• emails
Cit0day [cit0day.in] breaches.csv
LKnet reserve chat · breach
••• emails
LinkedIn.com.txt
Database World ROC · breach
••• emails
+ 3 more leak sources locked
Leak volumes are 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.