Fascinating stuff this.

In response to the question you asked, Willum, I did in fact receive a very official looking mail "from" my bank a few months ago but did not open it, as is my practice with any mail I have doubts about. On phoning the bank I was assured that it was an attempted scam.
I always thought that deleting an email without opening it (especially any attachment) stopped any invasion of the pc. Am I Correct in my assumption?

Peter