Yes, that's awful...

I'm in Bitcoin World more than two years now, and such thing has never happened to me. I still think that the MoonCoin was stolen because I have my wallet on my workplace computer. I don't have full access of things here, so it may be possible that my workplace computer is virused and that's why. I mean, if my personal, home computer was hacked, I guess attacker would also steal Bitcoins, not only MoonCoins, right?

I should have made MoonCoin wallet on my home computer, or as you are saying encrypted USB / dedicated wallet computer with some Linux distro etc... But this is first time in my life, so I will take precautions and secure all my Bitcoins and other coins. I consider buying Computer for that, I made nice profits since I'm in Bitcoin anyway, but this one was just great decision I was proud on, and now it's gone :/