The person that threatened the author of the post and everyone around him is a well known asshole from the Argentinian InfoSec community. He is a bad person that created a hostile environment for several women that are in IT (I am sure that for other people too). He stalked, discriminate, insulted, threatened and more. There is a lot of people that talked with the former speaker about this person in a moment of their life when she broke up with this piece of shit and she said that he was being violent with her. That's the reality, she might be a victim but the guy that harass whoever he wants its a dangerous person. You will have news from more people about this soon. We're simply tired of these disastrous characters. Violence must stop now.