Mrs A had a telephone call while I was out yesterday, from some man who said he was from Microsoft, and that there was a serious problem with our computer, but that he could tell her how to put it right. She was immediately suspicious, and told him I was out and that she didn't know how to operate it. "No problem", he said, "just turn it on and I will tell you what to do". "I don't know how to turn it on" she said. At that the caller muttered something rude and hung up. Needless to say, I don't have any fault with my laptop. He obviously was up to no good.
I gave her a big hug and a kiss when I got back.
Be on your guard.