This record tracks a ransomware attack claimed by the
akira group against
KSL Ingenieure. 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.
-36days
t1 · Published
t2 · Disclosed
Business Category
Services
Published
December 08, 2025
Disclosed / Notified
Nov 02, 2025
Attack Summary
KSL Ingenieure GmbH is a consulting firm based in Herrischried th
at specializes in various engineering services including building
energy consulting, structural engineering, and geotechnical cons
truction.
We will upload corporate 17 gb of corporate data soon. Confidenti
al project files, employee scanned documents (DLs, passports and
other files), HR files, projects, agreements, detailed financials
, customers and partners information and so on.
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 ksl-ing.ch
— indexed by HaveIBeenRansom.
0
found in Infostealer logs
19
found in Traditional breaches
0
found in Ransomware leaks
VerificationsIO_BF.7z.011
Kedr | Forum · breach
••• emails
Dropbox_BF.7z
B F R e p o V 3 F i l e s · breach
••• emails
Cit0day [cit0day.in] breaches.csv
LKnet reserve chat · breach
••• emails
intelx.zip
Database World ROC · breach
••• emails
Leaked Database Archive_2.7z.001
formaceft_db · breach
••• emails
AntiPublic_BF.7z
B F R e p o V 3 F i l e s · breach
••• emails
@BreachedData1 LinkedIn 2021-23 Cleaned.7z.001
Database World ROC · breach
••• emails
2844Breaches_BF.7z
B F R e p o V 3 F i l e s · breach
••• emails
+ 5 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.