Downloading and using "FN EXTERNAL.rar" carries several high-level risks:

If you have already downloaded this file, it is highly recommended to: : Do not run the .exe inside the archive.

: Upload the file to VirusTotal to see detections from multiple antivirus engines.

The term "External" distinguishes this software from "Internal" cheats:

: Unlike internal cheats that inject code directly into the game's memory (DLL injection), an external cheat runs as a separate process. It reads the game's memory from the outside to overlay information on the screen or simulate mouse movements.

: Files of this nature are a primary vector for malware . Because users are often instructed to disable antivirus software and Windows Defender to let the "cheat" work, attackers frequently include:

: Designed to grab browser cookies, saved passwords, and Discord tokens. Ransomware : Encrypting personal files for payment.