ΘΩΡΑΚΙΣΜΕΝΕΣ ΠΟΡΤΕΣ ΑΘΗΝΑ
http://martinbguq503.yousher.com/10-things-steve-jobs-can-teach-us-about-portes-asfaleias-antikatastash
It's been quite a while because we discussed security doors, so we thought it was due time for a refresher. Let's start by advising ourselves what they are and why we need them. What is a security door, and why