Old girl over the road from me was telling me one morning how she had a computor virus and it was a good thing microsoft rang her and fixed it.
I went straight over, the numb nuts had left traces on her desktop screen of their activities. Rang the bank, cancelled the transfer of $30,000. Got the local Plod involved too, fat lot of good that did.
Deleted all trace of their "rear door entry".
Some do fall for these scams otherwise after all these years they wouldn't still be happening