Security firm NetSPI has released ATEAM, a Python reconnaissance tool designed to discover Azure services and tenant ownership information based on their responses.

ATEAM - Azure Resource Attribution via Tenant ID Enumeration
At DEF CON 33, NetSPI presented a talk about how Azure resources supporting Entra ID authentication expose tenant IDs, enabling attackers to attribute cloud resources to specific organizations at scale.

NetSPI (www.netspi.com)
GitHub - NetSPI/ATEAM
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GitHub (github.com)