Microsoft Says Early June Disruptions to Outlook, Cloud Platform Were Cyberattacks

Microsoft Says Early June Disruptions to Outlook, Cloud Platform Were Cyberattacks
The Microsoft company logo is displayed at their offices in Sydney on Feb. 3, 2021. Rick Rycroft/AP Photo
The Associated Press
Updated:
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BOSTON—In early June, sporadic but serious service disruptions plagued Microsoft’s flagship office suite—including the Outlook email and OneDrive file-sharing apps—and cloud computing platform. A shadowy hacktivist group claimed responsibility, saying it flooded the sites with junk traffic in distributed denial-of-service (DDoS) attacks.

Initially reticent to name the cause, Microsoft has now disclosed that DDoS attacks by the murky upstart were indeed to blame.