SolarWinds attack opened up 4 separate paths to a Microsoft 365 cloud breach

A Microsoft store in British Columbia, Canada. (GoToVan from Vancouver, Canada/CC BY 2.0, via Wikimedia Commons)

The perpetrators behind the SolarWinds supplychain attack were observed leveraging four separate, techniques to bypass identity and access management protections and laterally move from victims’ on-premises networks to their cloud-based Microsoft 365 accounts.

Companies that use M365 may therefore wish to heed three key recommendations: harden your hybrid environments, conduct thorough audits of cloud assets, and ensure that any remediation efforts are performed in the correct sequence to prevent the possibility of reinfection.

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