I cannot believe I am going round and round on this with CS including an escalation today.
I've excluded the error for now but am not moving forward until PTC has had a conversation with Norton.
I've had nothing but advice on how to avoid getting the warning... but that wasn't the point of reporting this!
I fully trust PTC in their efforts to avoid virus issues with their roll outs but if one could have snuck in there, I would expect them to give this the utmost priority considering the install base.
I don't know enough about Norton to dig deeper... and worse, this is the Comcast provided version which has limited support or options. It just works and that's good enough for me.