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  • Marcus J. Ranum appeared in the Code 2600 documentary film.
  • Marcus J. Ranum is a computer and network security researcher. He is credited with a number of innovations in firewalls, including building the first Internet email server for the whitehouse.gov domain, and intrusion detection systems. He has held technical and leadership positions with a number of computer security companies, and is a Faculty member of the Institute for Applied Network Security.

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