#security
What we learn moving organisations onto the Microsoft cloud. Method, not opinion.
Windows 10 has ended: Windows 11 is the minimum, not the plan
Support ended in October 2025. Whether a fleet is already on Windows 11, paying for Extended Security Updates, or simply exposed, the decision underneath is the same: swap the PCs, or use the forced move to modernise the workplace behind them. This is the how, with the Intune, Autopilot and Azure commands, and the reason the same Windows 10 is free to keep alive in the cloud.
Can your AI assistant read documents the user cannot see?
A badly built RAG searches with the application's identity, not the asker's, and the assistant answers with what the person should not see. The fix is not a filter someone can forget to write: it is passing the user's token and letting Azure AI Search enforce permissions inside the engine.
Sending email from an application, without a single password
Microsoft turned off SMTP with a password. The answer is not to store a better secret: it is to store no secret at all. Managed identity, Microsoft Graph, and Mail.Send tied to a group of mailboxes. Here is the whole configuration, mistakes included.
What to put in order before switching Copilot on
Copilot does not create permission problems. It makes the ones already there findable, and you no longer need to know what you are looking for.
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