Ransomware Group sinobi Hits: Optimum Window Manufacturing
Summary
In the latest cybersecurity news, Optimum Window Manufacturing — a company operating in the US — has fallen victim to a ransomware attack conducted by the group sinobi. This data breach, discovered on 2025-12-18 21:29:40.594909, underscores the increasing need for proactive cybersecurity defenses as we continue through 2026.
Incident Report
| Attribute | Information |
|---|---|
| Target Organization | Optimum Window Manufacturing |
| Threat Group | sinobi |
| Summary | Optimum Window Mfg is the largest and most diversified manufacturer of steel windows and doors in the United States, offering custom high-tech metal systems for commercial and high-end residential applications since 1985. The company specializes in a wide range of products including fire-rated and non-rated steel windows and doors, aluminum windows and doors, as well as bronze and stainless steel options. Optimum collaborates closely with architects to create custom designs that merge performance, structural integrity, and aesthetic appeal. Their mission emphasizes the importance of precision craftsmanship and technology to deliver unique, high-quality products tailored to their clients’ specifications. |
| Date of Breach | 2025-12-18 21:15:55.641000 |
| Discovery Date | 2025-12-18 21:29:40.594909 |
| Region | US |
| Target Domain | www.optimumwindowmanufacturing.com |
| Business Sector | Manufacturing |
Recommended Security Actions
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- Phishing Detection and Response – Detect, investigate, and neutralize phishing threats before they cause damage.
Protect your organization before it becomes the next headline. Explore HookPhish.
How HookPhish Helps You Stay Ahead
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You can also check if your organization’s data has been exposed using our free 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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