This phone number came up on my computer screen representing itself as a phone number from a Microsoft help line. I got this prompt with the number while trying to back out of the website I was in for my bank trying to get to the home page, this prompt just popped up. It left a prompt message saying my computer was infected and I needed to call this number to get problem corrected. Since it did look legitimate as being from Microsoft, I called the number and was immediately connected to an Asian who spoke very broken English. Unfortunately, when he claimed he could correct my problem for me and asked to be able to access my computer, I followed his instructions and complied. Then, when he got to the part about he could give me lifetime security on what he called what sounded like a metal (?) security for my hard drive it would only cost me $499.00 for the lifetime of my computer, then he started quoting cheaper prices for less time when I hesitated. Then he told me for only $99.00 he could fix the problem with my computer now. Unfortunately, at this point in time, I finally realized this obviously was NOT a true representative from Microsoft, but a scam that had been able to get into Microsoft and send their phone number. I immediately hung up my phone and completely disconnected my laptop, going so far as to remove the power source bar and replace it. I did a total security check. When I turned on the computer, I got a prompt for Revocation information for security certification which wanted me to open. I did not do. I also changed the passwords on all my bank accounts and store accounts which I access with my computer. Hopefully, I have been able to keep anyone from access to my computer information. Moral: be careful and question any phone numbers that pop up on your computer screen before calling them, check them out or google them.