[1][2][3] Steve Crocker attended Van Nuys High School, as did Vint Cerf and Jon Postel.

[4] As a graduate student at the University of California Los Angeles (UCLA) in the 1960s, he was part of the team that developed the protocols for the ARPANET which were the foundation for today's Internet.

[8] Crocker led other graduate students, including Jon Postel and Vint Cerf, in designing a host-host protocol known as the Network Control Program (NCP).

Crocker has been a program manager at Defense Advanced Research Projects Agency (DARPA), a senior researcher at USC's Information Sciences Institute, founder and director of the Computer Science Laboratory at The Aerospace Corporation and a vice president at Trusted Information Systems.

In 1994, Crocker was one of the founders and chief technology officer of CyberCash, Inc.[16][17] In 1998, he founded and ran Executive DSL, a DSL-based ISP.