01/25/2026
How do you stop an employee from accidentally emailing your confidential client list to their personal Gmail?
This is a common data leak, but Microsoft 365 has a feature to stop it called Sensitivity Labels.
Think of them as tags you apply to your company's data, like "Public," "Internal," or "Confidential."
Once you have these tags in place, you can set rules for how those files are handled.
For example, you can create a rule that says: "If a file is marked Confidential, it cannot be sent to anyone outside our company."
If an employee tries to email that file to a Gmail address, Outlook will block it and warn them.
This creates a safety net for your data.
It also helps with AI tools like Copilot. If a document is labeled "Confidential," you can prevent Copilot from summarizing it or showing it to employees who shouldn't have access.
It takes some work to set up the rules in the backend, but labeling your data is the best way to make sure it stays safe.