Most people are pretty aware these days of people from foreign countries cold calling you claiming there are issues on your PC and kindly offering to help (for a fee of course). If they are given access to your PC system then things go downhill pretty quick for you from there.
However, even with all the publicity out there about the scams they just keep calling so there must still be people getting scammed. Now what happens if these scammers call a security MVP like Troy Hunt who recently gave a presentation for the CIAOPS Virtual Technology meeting (which you should go and look at after this)?
Watch and enjoy!