This record tracks a ransomware attack claimed by the
thegentlemen group against
SYSTHERM INFO. 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.
-64days
t1 · Published
t2 · Disclosed
Disclosed / Notified
Jan 22, 2026
Attack Summary
systherm-info.pl Systherm Info Sp. z o.o. is a Polish IT company headquartered in Poznan, founded in 1996. It specializes in GIS (Geographic Information Systems), IT solutions, and software security — most notably developing GEO-INFO, a leading land information system widely used in Polish geodesy and surveying. The company also distributes world-class software protection solutions (Sentinel/Gemalto) and holds ISO quality certifications
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 systherm-info.pl
— indexed by HaveIBeenRansom.
0
found in Infostealer logs
26+
found in Traditional breaches
4+
found in Ransomware leaks
Dropbox_BF.7z
B F R e p o V 3 F i l e s · breach
••• emails
Starostwo Powiatowe w Świebodzinie
play · ransomware
••• emails
@BreachedData1 LinkedIn 2021-23 Cleaned.7z.001
Database World ROC · breach
••• emails
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
Cit0day [cit0day.in] breaches.csv
LKnet reserve chat · breach
••• emails
Pemiblanc.com - Pemiblanc Credential Stuffing List.part16.rar
@mvddsp Reserv · breach
••• emails
MalindoAir_BF.7z
B F R e p o V 3 F i l e s · 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.