This record tracks a ransomware attack claimed by the
safepay group against
sumperk.cz. 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.
0days open
t1 · Published
t2 · Pending
Business Category
Retail / E-commerce
Indexed by Breach House
September 28, 2026
Leak Status
pending
checked 2026-09-28
Disclosed / Notified
Not disclosed yet
Attack Summary
Sumperk.cz operates as an online retailer based in the Czech Republic, providing a broad catalog of products including electronics, home goods, and fashion items to domestic consumers. The company maintains a multilingual e‑commerce website and offers nationwide delivery, positioning itself as a prominent player in the Czech retail market. Its digital storefront integrates various payment options and customer service channels to support a seamless shopping experience. In the context of cyber‑threat intelligence, Sumperk.cz has been identified as a ransomware victim associated with the Safepay threat actor, underscoring the vulnerability of e‑commerce businesses to ransomware attacks.
Leak Screenshots
1 CAPTURED
Captured directly from the operator's leak site by our collector, last checked 2026-09-28. Verdict evidence: [H7] 3d 11h 29m 11s
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Dark Web Exposure
Findings for sumperk.cz
— indexed by HaveIBeenRansom.
28
found in Infostealer logs
154+
found in Traditional breaches
2+
found in Ransomware leaks
limeleads_breach.7z
TheUnderground - Reborn · breach
••• emails
Full Clouds Cit0day_2.7z.001
DBs w MTDT · breach
••• emails
Cit0day [cit0day.in] breaches.csv
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
Database World ROC · breach
••• emails
B F R e p o V 3 F i l e s · breach
••• emails
B F R e p o V 3 F i l e s · breach
••• emails
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