Trusted Information Systems

Trusted Information Systems (TIS) was a computer security research and development company during the 1980s and 1990s, performing computer and communications (information) security research for organizations such as NSA, DARPA, ARL, AFRL, SPAWAR, and others.

Trusted Information Systems, Inc.
Company typePublic (Former Nasdaq symbol:TISX)
IndustryComputer software
Computer security
Founded1983 (1983)
FounderStephen T. Walker
FateAcquired by McAfee, later by SPARTA, Inc., which was acquired by Cobham, plc
SuccessorMcAfee
HeadquartersGlenwood, Maryland, U.S.
Area served
Worldwide
ProductsFirewall Software, IPSec VPN, Trusted OS
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