This record tracks a ransomware attack claimed by the
qilin group against
GUEGUEN Avocats. 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.
-44days
t1 · Published
t2 · Disclosed
Business Category
Finance / Legal / Insurance
Disclosed / Notified
Feb 03, 2026
Attack Summary
The organization GUEGUEN Avocats appears on the qilin ransomware leak site. It operates in the Finance / Legal / Insurance sector and is estimated to employ around 0-50 people. The affected entity is based in France. The attack was first observed on April 20, 2026 and published on the group's leak site on March 19, 2026. Breach House catalogues this incident from publicly available leak-site data; no stolen files are hosted here.
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 gueguenavocats.com
— indexed by HaveIBeenRansom.
0
found in Infostealer logs
30+
found in Traditional breaches
0+
found in Ransomware leaks
linkedIN_2.7z.001
Database World ROC · breach
••• emails
Deezer_BF.7z
B F R e p o V 3 F i l e s · breach
••• emails
colisprive.fr.rar
Database World ROC · 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
AntiPublic_BF.7z
B F R e p o V 3 F i l e s · breach
••• emails
+ 1 more leak sources 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.