website birth_place image_size nationality article_title birth_date known_for residence image employer name alma_mater
-lsb- http://www.ranum.com/ www.ranum.com -rsb- 20px new york city 180px 20px american marcus j. ranum
 5 november 1962 computer and network security innovator 20px morrisdale , pennsylvania mjr-portrait-picture-mid . jpg tenable network security marcus j. ranum johns hopkins university
marcus j. ranum

marcus j. ranum -lrb- born november 5 , 1962 in new york city , new york , usa -rrb- 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 .
