They claim to be from Microsoft and that they need to make changes to your computer because of a virus that is sending out signals. They said one of my computers has a "Flagship" virus. I told him that I am an IT person and that he was full of [***], I told him to put me on his "do not call" list and hung up.
Same thing happened to me today. He tried to tell me I had a Flagship virus, I told him that I am an IT person and that he was full of [***], then I hung up!