Hacked email / virus?

[SAL]

I know someone whose email address has Loch Vaa in it.
I've told him about this - thanks.

[King Penguin]

Doesn't guarantee the message has come from that person's account.
Most automated spam(virus) senders "spoof" the address they have come from to make the process of tracking down the culprit more difficult, by randomly selecting one from the infected machine's addressbook....
so if A's machine is infected and has previously exchanged emails with B and C then C may receive a spoof message which looks as it it comes from B when it has actually come from A.
Looking at the details in the Internet headers may give a clue to the real source.
(click "Options" in Outlook, "Other Actions/ View Source" in Thunderbird, for example)

[Red Adder]

I get 1 or 2 s day purporting to come from tech support of Facebook / Amazon etc. I suspect they are fishing for passwords. The give away is that the sender's email will be something like lizzie@hotmail - i.e. a bog standard user account rather than Facebook support person. Whatever you do don't open them / follow links / do what they ask as you well end up having your password nicked, provide the hacker other useful (financial ?) info or get directed to a site that will dump some nasty virus on your machine (ransom ware is currently a favoured flavour of this).