Yeah, I got the Costco one also, but have never been near a Costco store--none around here! What joy do people get out of sending viruses/malwares to email addresses that are totally unknown to them. I read some yrs back that the senders got half a cent for each spam they sent--but those were promoting a product or service. I've had Walmart, Costco, many ''airline etickets with 5 or more bags already pd for", (seems like I'm traveling everywhere! and going nowhere)...and if they all only want to plant a bug in my computer, what is the reasoning?? Is it just the half cent? And who is responsible for paying the half cent. Of course, it may be less now---or more. So very frustrating to have that stuff permanently on your hard drive.