Ghost Service Accounts Enable M365 Data Theft in Chile
Summary
In a concerning development for Microsoft 365 environments, a technique known as "Ghost Service Accounts" has been identified that can enable data theft even after employee accounts have been secured. These forgotten or lost service accounts, if compromised, can grant attackers broad access to an organization's entire M365 infrastructure.
IFF Assessment
The discovery of a method to bypass traditional account lockdowns for data theft presents a new and significant threat to organizations.
Defender Context
Defenders need to be aware of the lingering risk posed by orphaned or forgotten service accounts within their Microsoft 365 environments. Proactive auditing and de-provisioning of all service accounts, not just user accounts, is crucial to prevent attackers from exploiting these overlooked entry points for data exfiltration.