I live in a gated, guarded subdivision. It's quite nice. HOA dues are very high to pay for security and other amenities. That being said, we had a rash of car break-ins. Also things were going missing from unlocked garages. Turns out it was a teenager in the early morning hours checking for open doors. When he found an open door he would rifle through the car for spare change, cash, computers, iPads, iPhones, Etc. Never did find out whether he was a resident or not. However, the children of residents have been problems before. Entitled teenagers can be a pain in the ass.