Microsoft Information Protection: Updated data classification confidence levels and customization

From Microsoft Corporation

MC233488 · Published Jan 9, 2021

From QuixTec, LLC: about Microsoft Technical Bulletins: The information contained in these technical bulletins are provided ‘unaltered’ from the Microsoft 365 Message center. As an authorized Microsoft Partner, experienced SharePoint development group and Office 365 expert, QuixTec’s’ custom online or onprem solutions simplify your business processes. QuixTec observes the latest Microsoft notifications throughout initiatives that we custom develop for you.

Message Summary

We’re renaming the confidence levels (also called match accuracy) of data classification from a numerical scale to three distinct levels: high, medium, and low. In addition, you will soon be able to customize built-in classifiers (sensitive information types) in the Microsoft 365 compliance center.

This is message associated with Roadmap IDs 68915 and 68916.

When this will happen

We will roll out these changes from mid-January through the end of February 2021.

How this will affect your organization

First, sensitive information types are currently labeled with numerical values to reflect confidence: 85, 75, and 65. With this change, we are renaming the classification to high, medium, and low, respectively. Each level reflects the degree of supporting evidence detected along with primary element. Your existing polices will be automatically migrated to these renamed confidence levels.

  • A high confidence level has the most supporting elements and results in the fewest false positives but the most false negatives.
  • A low confidence level has most false positives but the fewest false negatives.

Your existing policies in the following solutions will soon reflect these updated classifications, and you will notice an improvement in the accuracy of your policy match results:

  • Auto-labeling policies
  • Communication compliance
  • Data loss prevention policies
  • Retention labels
  • Sensitivity labels

Second, you will soon be able to copy built-in sensitive information types and edit the copied versions to fine tune them.

When creating a custom information type, you’ll notice an improved user interface and new capabilities. Changes include the ability to use validators (such as a Luhn check) for regular expressions. There are additional checks to help refine detection, including options for excluding specific matches as well as defining starting and ending characters.

What you need to do to prepare

You might want to notify your users about this new capability and update your training and documentation as appropriate. 

Learn more

QuixTec, LLC is a U.S. certified Veteran Owned, modern DevOps organization and Microsoft Partner that specializes in Microsoft SharePoint, Office 365 expertise & HTML5 technologies for small to enterprise-sized organizations. The founder, Richard, has 30 years of experience working with several notable companies that include World Vision, Expedia, Microsoft, Levi Strauss, NASA, Boeing Aerospace, Los Alamos National Laboratory and the U.S. Air Force, to name a few. QuixTec is located in the Seattle area. Phone today for a free consultation and project estimate: (425) 367-9025 SHAREPOINT DEVELOPMENT – CUSTOM SOFTWARE DEVELOPMENT – OFFICE 365 EXPERTS – SHAREPOINT DOCUMENT LIBRARIES – SHAREPOINT CONUSLTANCY – CUSTOM SOLUTION DEVELOPMENT