You’ve heard the stories about the dark side of the internet–hackers, #gamergate, anonymous mobs attacking an unlucky victim, and revenge porn–but they remain just that: stories. Surely these things would never happen to you.

Zoe Quinn used to feel the same way. She is a video game developer whose ex-boyfriend published a crazed blog post cobbled together from private information, half-truths, and outright fictions, along with a rallying cry to the online hordes to go after her. They…