This record tracks a ransomware attack claimed by the
Deadlock group against
WH Müller. 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.
-72days
t1 · Published
t2 · Disclosed
Business Category
Education
Disclosed / Notified
Apr 29, 2026
Attack Summary
WH Müller is a family business in the field of electrical engineering and IT technology.
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 whm.de
— indexed by HaveIBeenRansom.
59
found in Infostealer logs
18
found in Traditional breaches
1
found in Ransomware leaks
VerificationsIO_BF.7z.011
Kedr | Forum · breach
••• emails
OnlinerSpambot_BF.7z
B F R e p o V 3 F i l e s · breach
••• emails
FULL_germany_5 sites_Datavortex_BD.rar
DataVortex.pro2 · breach
••• emails
Dropbox_BF.7z
B F R e p o V 3 F i l e s · breach
••• emails
Deezer_BF.7z
B F R e p o V 3 F i l e s · breach
••• emails
2844Breaches_BF.7z
B F R e p o V 3 F i l e s · breach
••• emails
beartax.csv
Database World ROC · breach
••• emails
Televerde
play · ransomware
••• emails
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.