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Criterion Systems provides information technology security and search technology services to the Transportation Security Administration, General Services Administration, Department of Defense and Intelligence Community and other federal agencies. The company offers consulting, system integration and management services. Its information technology security services include training and documentation. The company provides data collection and analysis, business process modeling and integration and operations management services. It conducts system security audits and offers asset management, data recovery and security monitoring services. Criterion Systems also provides security architecture design, Internet fraud detection and hacking services. The company offers logistics management, application development and strategy consulting services. It is located in Vienna, Va.

For more than 40 years, Mathtech innovators have combined analytical thinking with leading-edge technology to help clients solve complex problems. It equips government, business and legal clients with quantifiable answers to problems. The company delivers a variety of services to public and private sector clients through three highly specialized divisions, which include the federal division, which provides systems development and integration services, analytical defense solutions and advanced communications systems to federal government agencies; the state, local and commercial division, which supports state and local governments with custom systems design and implementation services, strategic and systems planning services, systems integration, project management and custom programming; and the economic and litigation consulting division, which provides services for litigation support, specializing in economic and statistical testimony. Mathtech is headquartered in Falls Church, Va.

Aristotle International is among the leading political technology firms in the United States. The non-partisan company provides software and services to candidate campaigns, state parties, political action committees and grassroots organizations. It serves more than 50 United States senators, 200-plus members of the U.S. House of Representatives and in excess of 45 democratic and republican state party organizations. Aristotle maintains a database of more than 160 million registered American voters. The company features CampaignContribution.com, an Internet fundraising service for candidate campaigns, state parties, political action committees and non-profit organizations; and Aristotle Internet Advertising, an online advertising service. Its Campaign Manager compliance program was the first software approved by the Federal Election Commission for electronic filing. Aristotle International was founded in 1983 and maintains offices in Atlanta, San Francisco and Washington, D.C.