There was a lot of talk in the past about PayPal mafia, a group of ex-PayPal folks who after moving on from PayPal went on to found major Tech companies - Tesla, Youtube, Spacex, Palantir, LinkedIn, and so forth.
I got the feeling that cDc (Cult of the Dead Cow) was something similar for cybersecurity after reading Perlroth - This Is How They Tell Me the World Ends.
The book traces the history of the Cult of the Dead Cow (cDc) from its founding. It reads like a biography written by a fan. It mentions many famous people. Was surprised to see Beto O’Rourke’s name. Mudge (Peiter Zatko) who became famous while at Twitter features prominently. I means, he was already famous among the tech circles. He probably got world-wide recognition during this period.