It can create and overwrite files in both program and user directories.
TheAltening is a service used to generate "alt" accounts for Minecraft. To use these accounts, the site often requires you to run their "Authenticator" (TheAltening.exe) to switch your login server from Mojang to their own. TheAltening.exe
If you want to play Minecraft, the only 100% safe way is to use the official Minecraft Launcher with a legitimate account. Don't risk your entire system for a free alt! It can create and overwrite files in both
