Seiko

Seiko

Data Breach on August 21, 2023
Data Breach Report
Victimseiko.co.jp
Threat ActorALPHV
Date DiscoveredAug 21, 2023
DescriptionSeiko Group Corporation, commonly known as Seiko, is a Japanese maker of watches, clocks, electronic devices, semiconductors, jewelry, and optical products.
Leak SizeUnknown

Credential Exposure for seiko.co.jp

We've indexed 20 @seiko.co.jp accounts from external breaches.

Last checked Aug 16, 2026

@seiko.co.jp addresses from external breaches
Third-party breaches17 accounts · across 14 breaches · 15 with a plaintext password · most recent Apr 30, 2024
Combo lists10 accounts · most recent Jul 22, 2026

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

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