Not sure if things are getting worse or if forums like this are making us aware of a lot more that we used to be.
Eitherway, last month while camping with several families in a local state park, one of the families in our group had the cable cut on their EU2000i in the middle of the night. All we found left in the moring was the cut cable and lock. We must have been lucky, there were (4) EU2000i in our group all left out and locked up that night...but only 1 of ours was stolen. Per the Ranger, 5 in total were taken that night, as well the Ranger's gate house was broken into.
Needless to say the rest of the generators were not left out at night for the rest of the trip.