If you have specific sensitive data you would like Netskope One DSPM to protect, but those types of data aren’t included in the default list of sensitive data, you can create a custom sensitive data type.

To create a custom sensitive data type, click on Classification > Sensitive Data Types in the left nav to create a custom sensitive data type. You will see a list of all custom sensitive data types currently added to your Netskope One DSPM instance.

1. Click Create Sensitive Data Type.
2. Input a name for the sensitive data type. 
3. Select the Sensitive Data Type Category from the dropdown. You can choose an existing category, categorize it as “not sensitive," or Create a New Category with a custom name and description.
4. Add a description as needed.
5. Mark the Display as Masked checkbox to make the masked icon appear on both the Sensitive Data Types and Classification Management screens.

4. Set the Sensitivity Level for your Custom Sensitive Data Type: not sensitive, low, medium, or high.
5. Optionally, use the Data Tags dropdown to select relevant tags for this Custom Sensitive Data Type or click the Create New Tag button to create your own.
6. Optionally, under Match Conditions, you can apply keyword and/or content conditions used in classification to improve the accuracy of detecting sensitive data.
   1. Input regex or exact words for Keywords matching.
   2. Input regex or use a data dictionary for Content matching.
7. Click Save to complete creating your custom sensitive data type.

After you create a custom sensitive data type:

1. You can classify a field with that sensitive data type. Click on Classification → Sensitive Data Types in the left navigation. All custom sensitive data types are listed here, and you can change classifications accordingly.
2. On the Data Classification page, you can filter searches by custom sensitive data type by clicking on the filter button above the table. The filter panel will then appear.
3. On the Dashboard and Alerts pages, alerts will appear for any queries with policies protecting these custom sensitive data types.

When taking action on a sensitive data type from the Classification Management page, you will see tooltip descriptors for: marking as reviewed, getting sample data, and reclassifying on the next scan.

This can help you improve performance and reduce unnecessary re-evaluation of your previously-classified data stores.

Read more about Classification with Netskope One DSPM.

Custom Sensitive Data Types can be configured to utilize regular expressions for matching either Field names, data content, or file content (for unstructured data).  Please visit the following articles for more information:

• Using Regular Expressions in Custom Sensitive Data Types 
• Using Data Dictionaries in Custom Sensitive Data Types