I've been working on something similar, starting a company around the idea! We realized that a lot of people had concerns or challenges with installing an extension on their production database and also that they wanted non-technical folks in compliance or HR to be able to configure and maintain the rules for individual employees. pgAnonymizer is a database extension but we structured ours to be a proxy server that hides/anonymizes/filters the data. We made a web dashboard that simplifies the configuration process, and allows you to configure what to do if columns get added to the database (default mask or hide new columns). We're about to go GA and if anyone has any feedback or wants to a free beta testing trial, I'd love to chat
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