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high severity December 18, 2025 · scope unconfirmed

Optimum Window Manufacturing Listed by sinobi Ransomware Group

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

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Severity High
Disclosed December 18, 2025
Affected Unconfirmed
Data exposed Internal files exfiltrated in ransomware attack
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