Cut and prune vegetation away from these areas. Fences can be a useful cover to an intruder once he is on the other side and can use the fence for cover to secret his activity. Please keep in mind that an intruder will use your weak spots to their advantage. Use timers if you are going away on vacation. Ask your neighbor to visually check your home during the day and night and be on the lookout for any suspicious activity.
Hardware stores offer economical security lighting devices.
One is a sound sensitive light activating unit that activates lights upon detecting sound. It is adjustable for a wide range of sensitivity levels. The light will stay deactivated until it detects sounds. This can be very useful for outside lighting at an entry way or inside of a house when you are away. Lights can be set to activate for a knock at the door or a car door closing in the area.