International Telemetering Conference Proceedings / October 18-21, 2004 / Town & Country Resort, San Diego, California / The use of hardware security for telemetry in satellites utilized for intelligence and defense applications is well known. Less common is the use of hardware security in ground-based computers hosting applications that post process telemetry data. Analysis reveals vulnerabilities in software only security solutions that can result in the compromise of telemetry data housed on ground-based computer systems. Such systems maybe made less susceptible to compromise with the use of hardware based security.