If you're on the edge of your seat, let me dispense with the suspense: Len Sassaman.
Anybody who's actually looked into this topic beyond reading someone else's theories and nodding in agreement knows the answer to this question. If the documentary is worth it's salt that will be it's answer as well. No other person who would've been connected to cypherpunk and cryptography groups at that time fits the bill better, and he fits it basically perfectly. I'm sure other early contributors also knew this, which is why https://www.slideshare.net/slideshow/black-ops-of-tcpip-2011...
Anybody who's actually looked into this topic beyond reading someone else's theories and nodding in agreement knows the answer to this question. If the documentary is worth it's salt that will be it's answer as well. No other person who would've been connected to cypherpunk and cryptography groups at that time fits the bill better, and he fits it basically perfectly. I'm sure other early contributors also knew this, which is why https://www.slideshare.net/slideshow/black-ops-of-tcpip-2011...