DLP in Microsoft Teams
Understanding the Concept
Teams DLP protects chat messages and channel messages in real-time. When sensitive content is detected, the message can be blocked or the content redacted from view.
Blocked messages show a 'blocked' indicator to the sender, and a configurable notification explains why. The original message is retained for compliance but hidden from recipients.
File sharing in Teams (backed by SharePoint/OneDrive) is covered by SharePoint DLP. Chat message DLP handles the text content within conversations.
Key Points
- Real-time Scanning: Messages scanned before delivery
- Message Blocking: Block entire message or specific content
- Policy Tips: Notifications explaining the block
- Override Option: Users can justify and resend
- Retention: Blocked content retained for compliance
Teams DLP Flow
Message Sent
User sends chat/channel message with sensitive data
DLP Scan
Message content scanned against policies
Match Found
Sensitive content identified
Block Applied
Message blocked, content hidden from recipients
Sender Notified
Policy tip shows why message was blocked
Override Option
User can justify and request override
Why This Matters in Real Organizations
Teams has become the primary communication tool for many organizations. Sensitive data shared in casual chats can spread rapidly. Real-time DLP prevents sensitive data from persisting in chat history accessible to all channel members.
Common Mistakes to Avoid
Interview Tips
- Explain the real-time blocking experience
- Discuss the difference between chat and file DLP
- Mention the guest user scenario
Exam Tips (SC-401)
- Know Teams-specific DLP capabilities
- Understand the relationship with SharePoint DLP
- Know how guest users are handled
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