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Ernest Käslin

worldleaks

This record tracks a ransomware attack claimed by the worldleaks group against Ernest Käslin. 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.

-27days
t1 · Published t2 · Disclosed
Oct 31, 2025Oct 04, 2025
Country
Switzerland
Business Category
Other
Employees
51-100
Discovered
2025-12-08
Published
October 31, 2025
Disclosed / Notified
Oct 04, 2025
Victim ID
Tac4KSIfdkIw

Attack Summary

[AI generated] N/A

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.

file_tree.png
finance_2024.xlsx
passport_scan.jpg
contract_signed.pdf
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Dark Web Exposure

Findings for kaslin.ch — indexed by HaveIBeenRansom.
0
found in Infostealer logs
10
found in Traditional breaches
0
found in Ransomware leaks
AntiPublic_BF.7z
B F R e p o V 3 F i l e s · breach
••• emails
intelx.zip
Database World ROC · breach
••• emails
Forex_7m_2023.zip
DataVista 巴茲德達特 · breach
••• emails
iMesh.com 44kk [+8kk new records].txt
444 pack · breach
••• emails
neteller.com.txt
Database World ROC · breach
••• emails
VerificationsIO_BF.7z.011
Kedr | Forum 🪾 · breach
••• emails
Exploit.in.rar
LKnet reserve chat · breach
••• emails
utip.org-7228214.txt
Formaceft db · breach
••• emails
+ 1 more leak sources locked
Leak volumes are locked
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Visit Website Original Post View Group: worldleaks

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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.