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Highly Adaptive Cybersecurity Services (HACS) is a U.S. General Services Administration contracting vehicle that enables federal agencies to procure cybersecurity services and related IT capabilities under the governmentwide MAS framework. It sits within GSA's IT contracting and purchasing programs as a specialized MAS offering, providing pre-vetted vendors and streamlined procurement with volume-discount pricing. Agencies access HACS through standard channels such as SAM.gov and other GSA procurement resources to conduct market research, compete for contracts, and manage ongoing contract performance.
AI named GSA Highly Adaptive Cybersecurity Services (HACS) in December 2025.