Data masking

Data masking is a way of protecting sensitive information in a computer database or system. It makes sure that confidential data can't be seen by people who don't have permission to see it. It works by changing or "masking" the original data with some other data that looks the same, but isn't really the same. For example, if you had a database full of peoples' addresses and phone numbers, data masking could make it so those numbers could only be seen by people with the right permission. People without permission would only see fake numbers that are not real.