Checked fact 266024 Oct 2026Safety and security

Microsoft says that following the unauthorized access, Storm-0940 used ARTEX to attempt to sign in to more than 2,250 tenants.

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The exact words it rests on

Following the unauthorized access, Storm-0940 used ARTEX to attempt to sign-in to more than 2,250 tenants.

What the source said when we opened it, on 24 Oct 2026.

The source

AI-driven, large-scale nation-state campaign using ARTEX enables supply chain compromise
Microsoft Security Blog · 2026-10-21

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Checked

Checked by the notis newsroom on 24 Oct 2026, against the source above.

In the story

Microsoft says Storm-0940 used the ARTEX agent framework in the ConnectWise compromise; it names no AI model 24 Oct 2026

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In a sentence

“Microsoft says that following the unauthorized access, Storm-0940 used ARTEX to attempt to sign in to more than 2,250 tenants.” ai notis, checked 24 Oct 2026. Source: AI-driven, large-scale nation-state campaign using ARTEX enables supply chain compromise (Microsoft Security Blog). https://ainotis.com/c/2660

As a reference (APA style)

ai notis. (2026, October 24). Microsoft says that following the unauthorized access, Storm-0940 used ARTEX to attempt to sign in to more than 2,250 tenants [Checked claim 2660]. ai notis. https://ainotis.com/c/2660

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