Recieved the following details in an e mail this morning. Originated in America. You get a phone call, is that Joe Bloggs ? yes, ah Mr/Miss X working for the Visa fraud investigation unit, we have what appears to be a strange transaction, it's Â£x to XXX. Your credit card number is - then they tell you the number. So you did not make that transaction ? - nope. Ok we will cancel it. Here is a report number should you need to contact visa at a later date xxxxxxx. Just to verify that the card is in your possession, could you give us the numbers on the back ? Ok thanks very much. Of course everyone knows that with the security numbers you can purchase stuff on the net - card not present fraud. No doubt we will all recieve the e mail warning us against this, but no harm in posting this - forewarned and all that.