It's common for users to exchange personal information to move the conversation to off your platform. This act can compromise the safety of your users and in the case of marketplaces, reduce your revenue significantly.
The Data Masking Extension allows you to mask phone numbers, email addresses, social security numbers and other sensitive information. You can create your own patterns (regular expressions) from the Dashboard and hide any other data as well. Masking takes place in-flight. In other words, even if your users inspect the code, they will not be able to find the original data. This helps keep you and your users safe.