pop up on computer, said call Microsoft and they gave a toll free # to fix my computer as they said it was important and may become unfixable if ! ignored the warning.they could fix it for 200 dollars..they said a koobface was being installed on computer. the # they said to call is 1-844-2402187.turned out to be lemtech not Microsoft.they also called themselves one step it solutions..they also said I didn’t have browser security. I have mc afee so I was confused and let them go ahead and ”fix” my computer. later realized it was probably a scam after I read the final agreement that said in all cases do not call your bank.Who says that!? I had signed an e- check with them. later did call my bank and got a new account etc.