I think quite a lot of tourists who are on holiday and renting villas may forget their security. My neighbour in Calis saw a handbag by the bins. Had someones belongings in (no money though) and an address in Calis. The neighbour took it over to the address, there where English people there and they had arrived the day before, gone to bed and not locked the door, they had been robbed and this handbag was part of the items taken. They said they did not bother to lock the door as they just arrived and where "tired".