Safeguarding Sensitive Data in Microsoft 365 Copilot with Purview DLP (GA Release)

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The challenge with sensitive data and access to Copilot Microsoft 365 Copilot empowers users with AI-driven assistance across Microsoft 365 apps, but it also raises concerns about accidental oversharing of sensitive information. In response, Microsoft has extended its Purview Data Loss Prevention (DLP) capabilities to Microsoft 365 Copilot, allowing organizations to enforce information protection policies within AI workflows. The DLP for Microsoft 365 Copilot has been in preview for some time, but Microsoft has now announced it is released for GA (General Availability). Among some of the interesting features are new features like alerting and policy simulation. Key details:  Rollout Timeline: As of June 2025, the rollout has begun. It should be completed worldwide by late July 2025. Scope: Initially, DLP for Copilot was available for Copilot Chat scenarios. By the time of GA this is expanding to Copilot in core Office apps (Word, Excel, PowerPoint) as well. Ensuring that DLP prote...

Searching for that LineURI

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Organizing and maintaining your entire dial-plan in Lync can at times be tough work. Easy enough when you're a small company, but try keeping score when reach 3-4000 DID's in your system.

I've been working closely with a customer of that size lately, and they asked me if there was anything I could do to help them when they had to allocate a new number (or move) to one of their employees. 

It turned out they were not able to keep score of available numbers, or where certain numbers were assigned. 

The first task was simple enough. I showed them Ståle Hansen's (http://msunified.net) script for identifying unused numbers. Big hit! 

However, the customer also wanted a quick way of identifying where a number was assigned, and if possible, to do the search with a wildcard (the lync client only returns an identity when a normalization rule has been matched).

I gave it a thought and created the following script to do a search through powershell. (download and rename to .ps1 to run).

The script asks for an input, then adds * to the input to make it a "wildcard" search.
It will then run several "get-" commands to see if any matches can be found within a known user, device, service or application.


The screen shot above is only the beginning of the script, but it should give you an idea of what it's doing.

When the script is run in a live environment, it's output could look like this:


In my demo environment the search only returned 1 user, but if there were more matches to the 4 digits entered in the search, there would be more hits.

I hope you find this script useful, as I did. In one my upcoming posts, I will post a script to export all used numbers to a searchable html file.