ΘΩΡΑΚΙΣΜΕΝΕΣ ΠΟΡΤΕΣ ΑΘΗΝΑ
http://martinbguq503.yousher.com/how-did-we-get-here-the-history-of-8wrakismenes-portes-sxedia-told-through-tweets
It's been quite a while considering that we talked about security doors, so we believed it was due time for a refresher. Let's begin by advising ourselves what they are and why we need them. What is a security