"People need reminding"
They certainly do.
I was working in the City a few years back and a server chap boasted how he had an uber-secure linux system at home that was uncrackable. So myself and the Security bod decided to take up his little challenge.
We were helped by the fact he decided to leave his laptop unlocked that lunch-time it has to be said.
When he got back from lunch we told him we'd put a little hello file from both of us in his root directory, whereupon he immediately vpn'd to his home device to check. The key-logger we had installed was busy sending us info which my commpratriot was using to perform the deed whilst I chatted to the numpty.
Needless to say he was a bit miffed when he found a little text file in his root directory (he didn't even check the timestamp (which was about 3 seconds before-hand)).
We didn't let him know how we'd done it for three glorious days, and he didn't have much hair to start with. When we finally put him out of his misery he claimed we had cheated !
Ah, heady days :D