Answer-What is 'data masking'?

Data masking ensures developerstesters work with realistic data formats without exposing actual customer PAN numbers, Aadhaar numbers, account numbers, or financial details. Types of data masking 1 Static masking masked copy for non-prod 2 Dynamic masking real-time masking based on user role, for example, a call centre agent sees masked card number 1234. Techniques Substitution, shuffling, encryption, nulling. It is critical for bank compliance with RBI data localisation, IT Act 2000, and customer privacy obligations.