質問です。つい先程、見知らぬ会社（？）のアドレスから私宛のメールが届きました。以下、そのコピペです。 件名: [Notice] Termination of plug.game (plug.game 서비스 종료 안내) 本文 Termination of plug.game services Hello, this is a message from NAVER's PLUG Team. Unfortunately, we have sad news to all the gamers who use plug.game. After much thought and consideration, we are confirming the termination of plug.game community services that let mobile games to enable users to communicate and get information. * Termination : Dec. 31, 2020 * The termination does not affect your game account or use, and only affects plug.game website and not the actual games. * Content stored in PLUG's mobile game community services cannot be backed up, so please backup your files in advance if necessary. We will destroy all personal information and data immediately after termination. We sincerely thank all those who have used PLUG and deeply apologize for terminating PLUG's mobile game community services. Thank you. 後にも続きがあったのですが同じ内容のようでしたので省略しました。 この会社のサービスを使った覚えが全く無いので、ものすごく動揺しています。この会社の事を知っている事があったらぜひ教えて下さい。 よろしくお願いします。