: Sending messages that look like official server notifications, such as "[System]: Player has been banned".
: Many "exploit executors" or scripts found on third-party sites contain viruses or loggers designed to steal your account information. FE CHAT HAX SCRIPT
In the context of Roblox, an typically refers to a script designed to exploit or modify the chat system in a way that is visible to all players in a server. "Filtering Enabled" is Roblox's security system that prevents changes made on a player's client from automatically replicating to the server; therefore, an "FE" script is one that has found a way to bypass or work within these constraints to affect others. Common Uses of These Scripts : Sending messages that look like official server
: Automatically sending messages at high speeds to overwhelm the chat box. FE CHAT HAX SCRIPT