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中国の国家ハッカーがExchange Serverの脆弱性をゼロデイ攻撃、マイクロソフトが警告 – TechCrunch Japan https://jp.techcrunch.com/2021/03/04/2021-03-02-microsoft-says-china-backed-hackers-are-exploiting-exchange-zero-days/
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