We all play different roles throughout our lives. I was fortunate enough to discover my passion early—and even luckier to make a living out of it. Before becoming a full-time hacker, I was also a script kiddie causing trouble, a young guy thirsty for bigger thrills, and a bug hunter chasing higher bounties. And now, I can proudly call myself a "hacker." All these experiences—whether good or bad—have truly shaped who I am today. This talk shares one chapter of my life—the days when I was competing full-time in "hacking competitions!"