I logged in to find I had been... raided, only they hadn't taken my valuable stuff, they had destroyed my beautiful shed and my bespoke kitchen cupboard (along with a few chests), nothing was locked.
As a treaty payer I contacted the Tribe to arrange for a Brave to swing by, they did and established it was one of their own who had got a bit trigger happy.
I found that they were very apologetic and their compensation was more than fair. Some people might think that they should replace every last item that was taken, but frankly half the fun of this game is making the stuff in the first place, so I was only really after a replacement cupboard and shed, but they insisted I have more than that.
Obviously getting griefed is never fun, but its only a game, get over it.