Siegfried is a Microsoft MVP for Office Apps and Services. He has great expertise in Office 365 implementations with a special focus on Security, Messaging and Identity for international customers.
In this installment of the Graph Activity Log series, we uncover how attackers exploit OAuth app consent to silently access Microsoft 365 data. Using targeted KQL queries and PowerShell automation, this blog shows how to detect, investigate, and respond to these stealthy identity-based threats.
Boasting a 20-fold increase in scalability and a cloud mailbox to hold a channel calendar, Microsoft is giving Teams private channels a significant revamp in an update that will roll out in late September 2025. The new mailbox is the new home for compliance records for private channels, which means that Microsoft 365 retention policies need a review to make sure that conversations are retained as desired.
In Part 3 of our Controlling Access in Entra ID Apps series, we explore how combining Administrative Units with RBAC roles enables scoped, secure management of Microsoft 365 resources. Learn how dynamic membership rules and role assignments help enforce least privilege, simplify delegation, and improve operational clarity across your tenant.
