Whilst the majority of sheds and outbuildings can be secured to a certain extent, they are rarely going to offer the same safety of a double glazed, lockable, brick built property. This doesn't, however, mean that their security is any less important. If you value the contents of your outbuildings ensure they remain locked when you are not at home and where possible don’t use them to store anything valuable. You could consider security lights and even CCTV systems if you wish to add extra security and present a deterrent to would-be thieves.