Storm-0940, a group linked to the Chinese government and active since at least 2021, targeted ConnectWise Cloud Backup with ARTEX, an AI tool used to automate attacks.
ARTEX enabled tests of 2,900 connections per minute across more than 2,250 user environments.
Microsoft says its use lets operators work around the clock without human intervention.
In some cases, attackers reached privileged systems in under three hours.…