This record tracks a ransomware attack claimed by the
thegentlemen group against
Energon. 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.
-58days
t1 · Published
t2 · Disclosed
Disclosed / Notified
May 13, 2026
Attack Summary
***.cz zoominfo.com/c/energon/430910504 ENERGON HOLDING is a prominent Czech group uniting various companies specialized in energy services, photovoltaics, and modern sustainable technologies. With over 25 years of industry experience, the group drives innovations that enhance the energy independence and competitiveness of the Czech Republic. They also actively invest in startups focused on renewable energy optimization, diagnostics, and the security of power infrastructure
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 energon.cz
— indexed by HaveIBeenRansom.
0
found in Infostealer logs
57
found in Traditional breaches
3
found in Ransomware leaks
Cit0day [cit0day.in] breaches.csv
LKnet reserve chat · breach
••• emails
OnlinerSpambot_BF.7z
B F R e p o V 3 F i l e s · breach
••• emails
Exploit.in.rar
LKnet reserve chat · breach
••• emails
Расшифровка Badoo.com [25,8kk].rar
Misha-z88 DB · breach
••• emails
AntiPublic_BF.7z
B F R e p o V 3 F i l e s · breach
••• emails
Leaked Database Archive_2.7z.001
formaceft_db · breach
••• emails
Pemiblanc.com - Pemiblanc Credential Stuffing List.part16.rar
@mvddsp Reserv · ransomware
••• emails
Collection1_BF.7z.003
formaceft_db · 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.