Are you advertising more than just your holiday?
Don’t advertise that you are going on holiday on social media-wait until you are home to upload your snaps
Check your home insurance policy, some insurers may pay-out less or not at all if you have posted that your away on social media
Use a timer switch to make your house look occupied even when it isn’t
Ask someone you trust to keep an eye on your home while you are away
Don’t leave spare keys in obvious places such as under doormats or plant pots