Government Agencies (NSA, CIA, FBI, DoD, DCA, U.S. Weapon
Systems, NASA, Lockheed, NAVY, Air Force, ARMY, County
of Marin, Bay Area Air Quality Management, etc.)
industries such as Citrix, Symantec, Wincom Systems, Cisco
Systems, Inc., University of California - Santa Cruz Extension,
University of California - Berkeley Extension, Madge Networks,
Semaphore Communication Corp, Apple Computer, 3COM Corp,
WatchGuard, WWP, CloudShield, and Extreme Networks.
industries such as KIST, KAIST, Seoul National University,
Korea University, Korea Institute For Defense Analyses,
Dong-Eui University, ETRI, Chungbuk National University,
Samsung Electronics Co., Ltd. for seminars since 1977.