These are tips and ideas from boaters on safety and security on the water:
If you do have something stolen, set up Ebay and Gumtree alerts for them. Valuable items like bikes and generators sometimes come up for sale.
Try to take a picture of suspected burglers. Not only does this help identification, sometimes even just pretending to take a photograph can frighten them off.
Be secure, but don’t make a fortress you can’t escape from in a fire.
Don’t be daft (e.g. using your MacBook Pro with the curtains open, in Hackney, at midnight).