To configure a data loss prevention (DLP) policy in Microsoft 365 to prevent users from sharing credit card numbers in Teams chats and channel conversations, you need to use the Microsoft Purview compliance portal. First, access the Microsoft Purview compliance portal and navigate to 'Data loss prevention' > 'Policies'. Create a new policy. Choose the 'Custom' template or a pre-built template if available, and select 'Next'. Give the policy a descriptive name (e.g., 'Credit Card Number DLP for Teams'). Choose the locations to which the policy applies. Select 'Teams chat and channel messages'. ....
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