Microsoft Says Azure Outage Began as DDoS Cyberattack

  • Microsoft’s defenses worsened the problem, company says
  • Customers including Starbucks were knocked off systems
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Microsoft Corp. said an outage of Azure cloud applications was triggered by a distributed-denial-of-service cyberattack.

The DDoS attack began early Tuesday and an error in Microsoft’s automated protection mechanisms worsened the impact rather than mitigating it, the company said in a status update.