Known as "Zero-day Charlie," he is a prominent figure in the discovery of zero-day exploits in commercial devices. His work is driven by curiosity and a sense of justice.

Referred to as "The Godfather," he was instrumental in establishing and developing the NSA's information security policies and protocols.

Named "The Kurd," he is a hacker whose initial motivations were to combat government oppression and who later became disillusioned with the ethical standards of the zero-day market.