What is data masking during extraction?

< 1 min read

Data masking during extraction means hiding sensitive information before loading into reports.
We masked fields like PAN number, phone number, and email IDs.
In my project, customer mobile numbers were partially shown as ****1234.
Masking was done in SQL view before Power BI extraction.
Only authorized users could access full data in source system.
This ensured compliance with privacy and security policies.
Also prevented sensitive data exposure in shared dashboards.
Test environments used fully anonymized datasets.
Business users still performed analysis without personal details.
So masking protects confidential data while allowing reporting.

Power BI Essentials