to strip out non-standard Unicode characters or "invisible" markers before the text is processed. Lua coding logic used to sanitize chat, or are you interested in the security measures Roblox uses to stop these scripts?
These scripts typically operate on a few core principles rather than "hacking" the filter itself (which is a backend system maintained by ROBLOX engineers and is generally impenetrable to client-side scripts). - FE - Universal Chat Bypasser Script - ROBLOX ...
A Universal Bypasser Script might have a dictionary that swaps standard Latin characters with their look-alike counterparts. to strip out non-standard Unicode characters or "invisible"