Symantec software IS a virus. You have to download their uninstall software to uninstall their software. Otherwise there are dozens of files embedded all over the place. Symantec is cancer-ware.
When I had it on my computer, I got the distinct sense that program was sifting through every damned file on my computer and anything coming in or going out looking for information that it could give to the CIA, FBI or the NSA.
Hell, that company probably IS NSA, IMO.