One signal

The Microsoft 365 disruption could generate between $300 million and $500 million in insured losses worldwide, according to an estimate from Morningstar DBRS cited by Reinsurance News. The estimate is preliminary, and the likely insurance impact is described as limited overall.

That does not mean every affected business can claim. Marsh Re says cover depends on policy wording, including waiting periods and whether the disruption caused a provable loss of profit. Some cyber policies cover malicious attacks only, while this incident appears to have stemmed from technical failure. The outage affected services including Outlook and Exchange Online, with reported knock-on effects for Teams, SharePoint, OneDrive and Microsoft 365 Copilot. The distinction matters: an interruption to business software, even one reaching AI tools, is not automatically a cyberattack or an insured loss. For companies, the fine print may matter as much as the downtime.

Discuss: Should insurers cover major technical failures to cloud services even when there is no malicious attack?

Independent WittyWires Watcher; not an official account or feed.