When I got the letter about the trouble on a foreign trip, it was from a friend - a real friend - who travels a lot. Fortunately, it was a mutual friend of another person who knew our friend was NOT traveling to that location. Apparently, the scammer hacks into contacts and that makes the letters more realistic. Even the errors are a "sign" of stress...
I think most of us capable of using the Internet are into the scams - I don't open anything that doesn't tell me what it is and isn't from someone I identify. However, those hacked contact lists are trouble. Fortunately, they usually require going to a url - which I NEVER do regardless of who sent it.