攻撃/DDoS/発生例について、ここに記述してください。

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https://azure.microsoft.com/ja-jp/status/history/

 9/15
DNS - Multi-Region

Summary of impact: Between 11:18 UTC and 13:00 UTC on 15 Sep 2016, a subset of customers using DNS in multiple regions may have experienced degraded service availability when connecting to their resources.