When we left off, we were examining the options available via the policy’s “Custom content” option (see screenshot below) –
The custom content option gives you the ability to determine what properties of the examined message will be sent to the DLP report’s recipient:
As you can see, it can get pretty involved. This feature is not only useful because of what can be included, but also because of what can be excluded. For example, the details of a message can be removed to preserve privacy while tracking incidents of your DLP rule being triggered.
Note also that actions can be added to create even more sophisticated, compound logic conditions.
And there can also be exceptions:
These exceptions can be very precise, for example:
The remaining properties are shown in the screenshot below:
- Choose the rule’s priority (this determines the priority it receives relative to other rules. For example, rules with a priority of 0 are processed first, 1 second and so on).
- Choose the rule’s severity level – Low, Medium and High
- Choose the rule’s mode – Enforce, Test with Policy Tips, Test without Policy Tips.
- Choose a date range for the rule to be in-effect (leave this blank to configure the rule to run without date restrictions).
- Choose whether or not to use the “stop processing more rules” option (see this Office 365 community blog post regarding when and how to use this)
- Choose what component of the (analyzed) message will be examined for the sender’s address – Header, Envelope or both Header and Envelope
- Choose which DLP policy the rule-set will be applied to.
Needless to say, we’ve only scratched this topic’s surface. Hopefully this series of posts has given you a good idea of what’s possible and where to look for more information.
Data Loss Prevention in Office 365: