Protects and guarantees the integrity and well functioning of your system. It won’t allow the change of configuration or accidental critical system files deletion/alteration, so your PC will be healthy and more stable. It is the ideal complement for any anti-virus program because it avoids the destructive action of any malicious virus (known or unknown) over the critical system files. It also allows you to store in a 'shielded' folder backup copies of your personal files.