While I was offline someone was able to access my claim in Revelation. In my claim, they managed to break 3 maple doors, and 3 dark oak chests (full of ore and ignots). All items were taken. A block of loam was also left in an empty doorway. This happened between 10:00 PM and 1:00 AM Pacific time. Its a little irritating that the items were lost, but I am more concerned about a general exploit in which claims can be accessed without permission.