Security? No problems for us in our 5+ years of boondocking and camping at undeveloped federal and state campgrounds except for once. We should have avoided this rest stop on the way to Florence through the Coast Range but it was getting dark, the rain was a torrential downpour and the road was narrow and winding. The bathrooms had grafitti on them which should have been a clue. During the night, some idiots stopped by us and raced their engine then left. Unnerving? Yes, but we have two big dogs and are armed. Just trust your instincts but i believe you will be better off at a federal or state facility or boondocking than you will in a city.