Sumitomo Metal Mining Reports Ransomware Attack at Philippine Nickel Subsidiary

Sumitomo Metal Mining Co ( (JP:5713) ) has shared an update.

Sumitomo Metal Mining has disclosed that its Philippine nickel smelting subsidiary, Coral Bay Nickel Corporation, suffered a ransomware attack in which two servers were encrypted following unauthorized third-party access. The company immediately isolated the affected servers and, with external specialists, is investigating the scope of the breach and working to restore systems, while apologizing to business partners and stakeholders.

Operations at Coral Bay Nickel’s production plant remain unaffected, with control systems intact and production continuing, and there has been no impact on other group mines, smelters, refineries, or plants. The networks of Coral Bay Nickel, Sumitomo Metal Mining Philippine Holdings, and Taganito HPAL Nickel have been disconnected as a precaution, and although the group currently expects only a limited impact on consolidated results for the fiscal year ended March 2026, a detailed assessment of financial effects is ongoing.

The most recent analyst rating on (JP:5713) stock is a Buy with a Yen9829.00 price target. To see the full list of analyst forecasts on Sumitomo Metal Mining Co stock, see the JP:5713 Stock Forecast page.

More about Sumitomo Metal Mining Co

Sumitomo Metal Mining Co., Ltd. is a Japanese non-ferrous metals producer focused on mining, smelting, and refining operations, with a strong presence in nickel smelting through subsidiaries such as Coral Bay Nickel Corporation in the Philippines. The company supplies key materials for global industrial and battery-related applications and operates mines, smelters, refineries, and plants worldwide.

Average Trading Volume: 6,435,376

Technical Sentiment Signal: Strong Buy

Current Market Cap: Yen2603.7B

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