Green Stamp

Green Stamp

Data Breach on October 31, 2022
Data Breach Report
Victimgreenstamp.co.jp
Threat ActorLockBit
Date DiscoveredOct 31, 2022
DescriptionGreen Stamp is leading loyalty and point card systems in Japan.
Leak SizeN/A

Credential Exposure for greenstamp.co.jp

We've indexed 34 @greenstamp.co.jp accounts from external breaches.

Last checked Aug 16, 2026

@greenstamp.co.jp addresses from external breaches
Combo lists24 accounts · most recent Aug 7, 2026
Third-party breaches19 accounts · across 21 breaches · 19 with a plaintext password · most recent Aug 18, 2024

None of this is necessarily connected to the ransomware attack above.

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