Trusted Information Systems
| Company type | Public (Former Nasdaq symbol:TISX) |
|---|---|
| Industry | Computer software Computer security |
| Founded | 1983 |
| Founder | Stephen T. Walker |
| Fate | Acquired by McAfee, later by SPARTA, Inc., which was acquired by Cobham, plc |
| Successor | McAfee |
| Headquarters | Glenwood, Maryland, U.S. |
Area served | Worldwide |
| Products | Firewall Software, IPSec VPN, Trusted OS |
Trusted Information Systems, Inc. (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.