Microsoft outage caused by major DDoS cyberattack

A global Microsoft outage on 30 July that affected video game Minecraft and email product Outlook was triggered by a distributed denial of service (DDoS) cyberattack, the tech giant has confirmed.

The news comes just two weeks after a CrowdStrike update caused 8.5 million computers to crash around the world.

The cyberattack on Microsoft also affected a number of companies and services including UK bank NatWest and the HM Courts and Tribunals Service.

What caused the latest Microsoft crash?

Starting on Tuesday (30 July) at 11:45am GMT, Microsoft said a “subset of customers may have experienced issues connecting to a subset of Microsoft services globally”.

Attackers targeted Microsoft with a DDoS attack, which meant they sent requests from a large array of different computers to a specific service to overload it.

The attackers specifically targeted Entra, a service that allows Microsoft users to log on to services. Without the use of this service, users were unable to log on.

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