All about Microsoft 365
Last week, we explored Entra ID’s app instance property lock feature. As part of the process, we examined one possible way that bad actors could take advantage of the convoluted nature of working with multi-tenant applications within Microsoft 365 and their in-tenant representation, the service principal. As the app instance …
Continue readingScript to review and remove service principal credentials
Today’s article will be a short one. In a small, but meaningful update, Microsoft has released a new addition to the signInActivity resource, which allows us to determine the last time a given user was able to sign in successfully to the service (“last successful login timestamp”). Until recently, we …
Continue readingWe can finally report on last successful login timestamp in Entra ID
In this article, we demonstrate a somewhat convoluted method used by bad actors to obtain persistence and execute operations in the context of Entra ID multi-tenant applications, as well as the steps Microsoft is taking to address the issue. As the solution only covers part of the story, a follow up article and a PowerShell script will be needed to address it. …
In another “forgotten knowledge” topic, let’s discuss how to automatically clean up/remove items from the Deleted items folder in Exchange Online/Microsoft 365. Nothing has changed in this process for years now, but it looks like people online are still having a hard time finding proper instructions on how to configure …
Continue readingMake sure Deleted items are automatically removed from Microsoft 365 mailboxes
Spotting some strange entries in the output of a Graph SDK cmdlet leads us down the rabbit hole of troubleshooting “missing” GUIDs in Entra ID. Or how SignInActivity data for users’ access to other tenants is collected …