This one almost had me: Got a request from a good friend to help send an Amazon voucher for £250 to a sick friend of theirs. "We will reimburse you later". It looked totally genuine and really did come from them (correct email add, etc.) £250 seemed a lot to me so I suggested that they come to mine and we do it together using my Amazon a/c as they only live just down the road. This was a very fortunate decision on my part becuase no response came. Went to their house next morning to discover that their email account had been hacked via Whatsapp and the same scam request had gone to other friends one of whom had kissed goodbye to £250 because it seemed so genuine. Apprently Whatsapp is known to be dodgy but Zukerberg is not doing anything about it.