Norton AntiVirus is an anti-virus and an anti-malware software developed and distributed by Symantec Corporation since 1991 as part of its Norton family of computer security products. It uses signatures and heuristics to identify viruses.
Uninstall older versions of Norton for Mac. In the Applications folder, open the Symantec Solutions folder, and then double-click Symantec Uninstaller.
In the Uninstall Symantec Products window, select the check box next to the Norton applications that you want to uninstall. Click Uninstall.
Confirm that you want to delete the product. In the Authenticate window, type your administrator account password, and then click Ok. In the window that displays the list of deleted items, click Close. Click Restart.