insecurities are what they will look for, but its amazing the number of scenes i am called to where the laxness of the residents just makes it that bit easier for thieves to get in, and i hate to say it but its the obvious ones like not closing and locking windows and doors, but the even more unforgivable sin of locking the door and leaving the key in the lock, to be honest you,d be better off leaving the door unlocked in the first place, at least then you don,t have to replace a broken window as well. it sounds obvious and patronising, but if you lock it remove the key and put it somewhere out of sight and unaccessable, its a simple measure, but in my experience it can be sufficient to put off a potential thief and make them move on to somewhere more easier, as most burgularies are not planned, but oppotunistic breaks.