[quote]
This was a scam type I hadn't met before. I didn't find out how he would have planted the hook or where he obtained stories about some of the events of my working days.
[/quote]
Had that from a panhandler in the street once. As I worked in an industry with a very high staff turnover and with a lot of contract and temporary staff it was easy to think I might have genuinely forgotten him. The conversation was very clever - always drawing the names and places from me. If he hadn't ended up asking for money I might have believed him!

I have caller id on my phone and any numbers I don't recognise go to the answerphone and I only pick the call up if they start to leave a genuine message. Nor do I open obvious spam emails.