To prevent criminals from simply lifting up smaller sheds to gain entry, make sure it is firmly anchored down into the ground
Closed shackle padlock on a hasp and staple
Shed alarm
Internal window grilles
Secure ladders and other equipment
Secured by Design products that meet the Police Preferred Specification of performance demonstrating that they are resistant to criminal attack, can be found by using the search function found here: Secured by Design - Search