Just joined. Old guy with old Mac desktop, middle aged Mac laptop & new Mac desktop. Laptop has just picked up a bug which I can't get rid of, it's obviously a scam. It's a popup in the guise of a PDF with a number - 1-855-999-4655 - that I'm supposed to call. Not doing that, I will head over to the Malware section for help now. Found your site with a help search. Thanks for that!