I have been living in Kuala Lumpur for the past 16 years, and I have never seen anything like that before, or at least not that extreme. It was reported that the cage owners do so because the crime rate is already not bearable. Your house might be broken into regardless day or night.
The next thing they have to worry is to make very sure that their cage won’t be on fire. Else you will be making a fool out of yourself, setting up cages that will trap yourself inside.