Keep the holiday cheer under the tree this year and don’t let the grinch steal it from your cars.
1) Lock your car and ensure all windows are closed
2) Do not leave valuable items in your car
3) Items left in your car should be secured out of sight
4) Do not leave spare keys in/near your car.
5) Park in well lit areas or areas covered by cameras
6) Keep security systems activated
Original source can be found here.