This record tracks a ransomware attack claimed by the
worldleaks group against
Mandom Corporation. 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.
-18days
t1 · Published
t2 · Disclosed
Business Category
Communication / Marketing
Published
August 21, 2025
Disclosed / Notified
Aug 03, 2025
Attack Summary
[AI generated] Mandom Corporation is a Japanese company specializing in the production and sale of cosmetics, perfume, and health products. Originated in Osaka, it offers leading brands like Gatsby and Lucido-L. With a focus on personal care products for men, Mandom also caters to women's beauty needs. This firm is recognized for creating innovative, high-quality products that promote comfort and style.
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 mandom.co.jp
— indexed by HaveIBeenRansom.
0
found in Infostealer logs
80+
found in Traditional breaches
0+
found in Ransomware leaks
2844Breaches_BF.7z
B F R e p o V 3 F i l e s · breach
••• emails
LuminPDF_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
Peatix_BF.7z
B F R e p o V 3 F i l e s · breach
••• emails
AntiPublic_BF.7z
B F R e p o V 3 F i l e s · breach
••• emails
OnlinerSpambot_BF.7z
B F R e p o V 3 F i l e s · breach
••• emails
Dropbox_BF.7z
B F R e p o V 3 F i l e s · breach
••• emails
LinkedIn.com.txt
Database World ROC · breach
••• emails
+ 10 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.