Every time I conduct a scan, the same trojan virus is identified and quarantined on my MAC computer. I consulted the tech staff at Norton twice. The first time, the technician deleted the virus, but the next time I booted my computer, the Norton Program would not load. The second technician uninstalled and reinstalled the program which worked until I rebooted my computer. I next consulted a technician from my local university. He uninstalled and reinstalled the program but when reinstalling it, it did so as if he were installing it on a new machine (one of the selections). This solved the problem for about a week. Unfortunately, the problem reappeared and is now chronic every time I shut down and restart my computer and conduct a scan.
Any suggestions?