Nicolas Gregoire has more than 15 years of experience in penetration testing and auditing of networks and (mostly Web) applications. A few years ago, he founded Agarri, a small company where he seeks security bugs for customers and for fun. His research has been presented at numerous conferences around the world and he has been publicly thanked by numerous vendors for responsibly disclosing vulnerabilities in their products. He occasionally participates in bug bounties, and earned the highest rewards from Prezi (twice) and Yahoo. He’s also a long-time user of Burp Suite (playing with this tool for the last 8 years) and an official PortSwigger training partner: https://portswigger.net/training/#partners