This record tracks a ransomware attack claimed by the
qilin group against
Maset. 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.
-39days
t1 · Published
t2 · Disclosed
Published
November 06, 2025
Disclosed / Notified
Sep 28, 2025
Attack Summary
The organization Maset appears on the qilin ransomware leak site. It operates in the Other sector. The affected entity is based in Spain. The attack was first observed on December 04, 2025 and published on the group's leak site on November 06, 2025. This record is maintained by Breach House as part of its ongoing monitoring of public ransomware leak sites.
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 maset.com
— indexed by HaveIBeenRansom.
114
found in Infostealer logs
57+
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
Twitter Full DB.part01.rar
Database World ROC · breach
••• emails
@BreachedData1 LinkedIn 2021-23 Cleaned.7z.001
Database World ROC · breach
••• emails
OnlinerSpambot_BF.7z
B F R e p o V 3 F i l e s · breach
••• emails
@TXTLOG_ALIEN — @TXTLOG_LINK - 491.txt
Database World ROC · breach
••• emails
Apollo.io DB 816millions.rar
Database World ROC · breach
••• emails
+ 14 more leak sources locked
Leak volumes are locked
Sign in to reveal how many records each source exposed and the remaining 17 sources.
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.