What is the scariest hacker in the world?

I'm curious, who do you consider to be the scariest hacker in the world? Are they a solo actor or part of a larger organization? What techniques or methods do they use to infiltrate systems and steal data? Have they targeted any high-profile individuals or organizations, and what were the consequences of their actions? Additionally, how do they manage to stay under the radar and avoid detection by law enforcement agencies? I'm fascinated to learn more about this enigmatic figure and their impact on the world of cybersecurity.