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MSDLP - Blocking .PST .OST files

SathishKumar Venugopal 21 Reputation points
2021-05-26T04:50:01.47+00:00

Hi ,

In my organization we were previously using a DLP solution where we mention the "Custom file signature" for outlook files like .pst & .ost files and prevent them sharing outside network. this was working even though if users change the file extension and try to share.

Right now we moved to MSDLP when I checked options for the same I could see "File Extension" But that doesn't work if I change the file type and try to exploit.

Do we have any other option to block even if users rename the original file(.pst, .ost) and change the file type as XYZ?

Microsoft Defender for Cloud
Microsoft Defender for Cloud
An Azure service that provides threat protection for workloads running in Azure, on-premises, and in other clouds. Previously known as Azure Security Center and Azure Defender.
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