The Most Expensive Lesson Of My Life: Details of SIM port hack

Sean Coonce
May 20, 2019 · 6 min read

I lost north of $100,000 last Wednesday. It evaporated over a 24-hour time span in a “SIM port attack” that drained my Coinbase account. It has been four days since the incident and I’m gutted. I have zero appetite; my sleep is restless; I am awash in feelings of anxiety, remorse, and embarrassment.

This was the single most expensive lesson of my life and I want to share my experience + lessons learned with as many people as possible. My goal is to increase awareness about these types of attacks and to motivate you to…