Omiya Kasei

Omiya Kasei

Data Breach on October 18, 2022
Data Breach Report
Victimoomiya.co.jp
Threat ActorLockBit
Date DiscoveredOct 18, 2022
DescriptionOmiya Kasei Co., Ltd. Omiya Kasei responds to the changing needs of the times and contributes to the development of industry.
Leak SizeN/A

Credential Exposure for oomiya.co.jp

We've indexed 26 @oomiya.co.jp accounts from external breaches.

Last checked Aug 16, 2026

@oomiya.co.jp addresses from external breaches
Third-party breaches23 accounts · across 12 breaches · 22 with a plaintext password · most recent Nov 15, 2020
Combo lists15 accounts · most recent May 8, 2026

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

Is your organization next?

Omiya Kasei was breached. Check if your company's credentials have been exposed in this or other data breaches.

Check your exposure →

Continuous dark web monitoring alerts you when we find leaked credentials or session tokens for your company.