This record tracks a ransomware attack claimed by the
clop group against
ACRONI.SI. 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.
-84days
t1 · Published
t2 · Disclosed
Business Category
Manufacturing / Engineering
Published
November 21, 2025
Disclosed / Notified
Aug 30, 2025
Attack Summary
[AI generated] ACRONI.SI is a Slovenia-based company primarily engaged in the production of steel. The company specializes in heavy plates, electrical steel, clad plates, and off-cut tool steel. It caters to a varied range of industries including naval, heavy machinery, energy, automotive, construction, and tool making industries. Their operations involve processing crude iron, steel casting, rolling, heat treatment and other procedures.
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 acroni.si
— indexed by HaveIBeenRansom.
3
found in Infostealer logs
46+
found in Traditional breaches
2,954+
found in Ransomware leaks
ACRONI.SI
clop · ransomware
••• emails
Apollo.io DB 816millions.rar
Database World ROC · breach
••• emails
VerificationsIO_BF.7z.011
Kedr | Forum · breach
••• emails
@BreachedData1 LinkedIn 2021-23 Cleaned.7z.001
Database World ROC · breach
••• emails
AntiPublic_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
Dropbox_BF.7z
B F R e p o V 3 F i l e s · breach
••• emails
Forex_7m_2023.zip
DataVista 巴茲德達特 · breach
••• emails
+ 9 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.