Hunton Insurance Recovery Blog

The November 12 Microsoft 365 outage is another reminder that some of the most disruptive cyber losses may have nothing to do with a cyberattack.

On November 12, a widespread Microsoft 365 disruption affected Exchange Online and functionality across Outlook, Teams, and other cloud-based services. Microsoft attributed the disruption to infrastructure problems, including servers becoming unavailable and a process used to establish secure connections becoming overwhelmed. Microsoft has reported no evidence of malicious activity to date.