Today around 1:50 on my Windows 8.1 computer there was an intrusion attempt blocked by Norton from customer help-support.com, and it was a Fake Scan Webpage 30. My dad was on this computer at the time, so I don't know what site he went to that triggered this. Since then I haven't gotten any other attempts, and nothing was downloaded that I see in the control panel. Norton says no action required, should I be worried?