I have been pestered by an intrusive pop-up which alleges that a 3-Day Free trial of the site, POPCORN.com, has ended. The pop-up appears as soon as I connect to broadband and appears to be on a timer as it reappears if I remain on line for any length of time. The pop-up suggests that I should pay a subscription to continue to enjoy membership (which I do not want, have not used and never subscribed to) or to pay a fee to have the pop-up stopped. I regard this as blackmail.
Any suggestions for getting rid of this unwanted attention will be most welcome.