Any Third Party Applications that will interfere with the normal operation of the OS, alter, modify, remove or delete or attempt to do so is an invitation for disaster and comprising the Operating System
It may require a Reinstallation of the OS in-order to replace any modified, altered, removed or corrupted elements of the OS this software has inflicted on this computer
Although some or all of these Applications maybe or may not be available on the Apple Apps Store, it does not mean Apple has verified what exactly the Application can do, does do or is doing to the Computer. That responsibility is left to the User to perform their due diligence on the Application before purchasing and installing it.
Any of the below should be removed as per Developers Instructions
This will included Norton Antivirus and please, please some of the many posting regarding this specific Application
There has been sufficient advise offered for the User to make an informed and educated choice what the next course of action is required.
The suggestions have been put forth on a volunteer basis, in good faith and in the best interests of the computer.