I've always wondered how secure these types of entry doors are with a huge amount of glass around them. For those who would want to break into your home, it wouldn't be a problem at all. So yes, either a security system, alarm system, or put a new and normal door. Check at least exterior doors mississauga on the website https://www.elegantentrydoors.ca/mississauga/ to see the different entry door options and prices. It probably won't be more expensive than a professional security system.