Yesterday, I was on a firearms site and the thread refered folks to another site(castboolits.com). When I clicked on the highlighted site, I immediately received a warning window from Frontier Communications that I should call their ph. number.
I called Frontier, but using a different number. The tech told me that it was not their warning and that some people have been charged several hundred bucks to fix a problem that was not there. It took the tech an hour to clean the adware out of my computer.