This record tracks a ransomware attack claimed by the
clop group against
challenger.com. 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.
-54days
t1 · Published
t2 · Disclosed
Business Category
Retail / E-commerce
Published
February 10, 2025
Disclosed / Notified
Dec 19, 2024
Attack Summary
[AI generated] Challenger is a Singapore-based business that operates a chain of IT retail stores and an online marketplace. Established in 1982, they offer an extensive range of electronic devices, including computers, laptops, tablets, mobile phones, and accessories. Not just a retailer, they also provide repair services for IT products. Customers can also earn loyalty rewards through their ValueClub membership program.
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 challenger.com
— indexed by HaveIBeenRansom.
1,583
found in Infostealer logs
1,633+
found in Traditional breaches
86+
found in Ransomware leaks
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@BreachedData1 LinkedIn 2021-23 Cleaned.7z.001
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VerificationsIO_BF.7z.011
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••• emails
contacts_79.csv
Database World ROC · breach
••• emails
contacts_80.csv
Database World ROC · breach
••• emails
OnlinerSpambot_BF.7z
B F R e p o V 3 F i l e s · breach
••• emails
+ 17 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.