Most programmers today are trained on the web development model. Unfortunately, the blockchain security model is more akin to the older model.A hacker stole $31M of Ether — how it happened, and what it means for Ethereum9.6K153Haseeb QureshiKonstantin KrupovichFollowJul 22, 2017 · 1 min readwhy negative? old is not always bad. I’m old, but i’m wize (not joke, just example, thow)