Free "killer" tools are frequently distributed through unverified third-party forums, carrying a high risk of containing trojans or spyware that can compromise the user's PC.
While helpful for legitimate owners, these tools can inadvertently facilitate the resale of lost or stolen devices by removing the safeguards intended to deter theft. The Evolution of Mobile Defense
Disabling Knox often "trips" a physical e-fuse, permanently voiding the device warranty and disabling secure features like Samsung Pay or Secure Folder.