Data Mask is a data security tool that obfuscates confidential or protected information in your Salesforce sandbox environments. You can choose to replace your sensitive data with random characters and numbers, data from built-in libraries, or user-specified patterns.
PROTECT SENSITIVE DATA WHEN TESTING APPS
Fully integrated into the Salesforce Platform, Data Mask prevents data such as Personal Information (PI) and Personally Identifiable Information (PII) from leaving Salesforce trust boundaries.