Proterial America, Ltd. Data Breach: Metaencryptor Ransomware Claim (Nov 2026)
Summary
In the latest cybersecurity news, Proterial America, Ltd. — an organization based in US — has fallen victim to a ransomware attack conducted by the group metaencryptor. This data breach, discovered on 2026-11-07T11:40:31.917344+00:00, underscores the increasing need for proactive cybersecurity defenses as we continue through 2026.
Incident Report
| Attribute | Information |
|---|---|
| Target Organization | Proterial America, Ltd. |
| Threat Group | metaencryptor |
| Summary | Proterial, Ltd., headquartered in Tokyo, Japan, with consolidated revenue totaled about 881 billion yen ($8.3 billion) in fiscal 2019 (ended March 31, 2020), is one of the major member companies of the Proterial Group. Proterial America manufactures and markets a diverse portfolio of high-grade metal products and materials, magnetic materials and applications, high-grade functional components and equipment, wires, cables and related products.
Data size: — |
| Date of Breach | 2026-11-07T11:40:07.828830+00:00 |
| Discovery Date | 2026-11-07T11:40:31.917344+00:00 |
| Region | US |
| Target Domain | us.proterial.com |
| Business Sector | Manufacturing |
How to reduce your ransomware risk
Most ransomware intrusions start with a stolen password or a phishing email. A few proactive steps sharply cut your exposure:
- monitor the dark web for leaked logins — close the gap attackers exploit.
- continuous breach monitoring — close the gap attackers exploit.
Want to know if you’re already exposed? Run a free scan with the HookPhish data breach checker.
Disclaimer
HookPhish does not engage in the exfiltration, downloading, taking, hosting, viewing, reposting, or disclosure of any stolen information. All breach data reported here is sourced from publicly available threat intelligence feeds for awareness purposes only.
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