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Our MAS buying content will be revised to align with Federal Acquisition Regulation changes. Visit the Revolutionary FAR Overhaul to find streamlined FAR parts and agency deviations. Share feedback at MBX.OMB.OFPPv2@OMB.eop.gov.
Eligible users: Federal, state, local, tribal, and territorial governments
MAS Solicitation: IT Services
NAICS: 541519 Other Computer Related Services
PSC: DJ01 IT and Telecom - Security and Compliance Support Services (Labor)
Vendor list: eLibrary
Highly Adaptive Cybersecurity Services, known as HACS, can help your agency:
HACS includes proactive and reactive cybersecurity services and supports governmentwide priorities like Application Security Testing and Zero Trust Architecture.
Did you know we offer free scope compatibility reviews? This unique benefit of working with GSA can help reduce the risk of protest and improve acquisition outcomes.
We offer free technical reviews of draft requirements for agencies buying through SIN 54151HACS.
Watch our HACS Use Case video on YouTube.
Join our IT security Interact community for news and updates for agencies and industry.
State, local, territorial, and tribal governments may be able to purchase through Cooperative Purchasing and Disaster Purchasing programs.
Eligible agencies can issue an request to vendors through eBuy and GSA Advantage. Read the HACS ordering guidefor more details.
You can establish a blanket purchase agreement with MAS contractors using the authority and instructions under FAR 8.405-3.
These example templates provide typical language and can be copied and pasted directly into sections 3.0 and 4.0 of the RFQ template:
HACS vendors are categorized under six subgroups for market research purposes:
You can specify a subgroup or subgroups by inserting this language into your RFQ: “This Request for Quotation seeks contractors holding the Highly Adaptive Cybersecurity Services Special Item Number and the contractor must be categorized in the following HACS subgroup (or subgroups) [insert subgroup or subgroups].”
Use eLibrary’s HACS contractor page to filter vendors by set-aside; select your specified socio-economic designation (such as SBA Certified 8(a) Firm) and search. Specify set-asides and any other qualified requirements (like scope and mandatory knowledge) in the solicitation. Always check a contractor’s GSA price list to verify and confirm availability of awarded products and services; offerors are responsible for keeping their awarded subgroups up to date in eLibrary.
Current contract holders can submit a modification to add a SIN in the eOffer/eMod portal. If you’re new to MAS, follow the MAS Roadmap guidance for preparing and sending an offer.
All vendors must pass an oral-technical evaluation before they can be awarded the HACS SIN:
Need help? Contact the Vendor Support Center.
We are available Sunday 9 p.m.-Friday 9:30 p.m. Eastern time. Average wait times are under a minute.
Live chat currently closed: Normal hours are Sunday 9 p.m.-Friday 9:30 p.m. Eastern time.
Hours for live chat and calls:
Sun 8 p.m. to Fri 8:30 p.m. Central time
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Rates for Alaska, Hawaii, and U.S. territories and possessions are set by the Department of Defense.
Rates for foreign countries are set by the Department of State.
Rates are available between 10/1/2023 and 09/30/2026.
The End Date of your trip can not occur before the Start Date.
Traveler reimbursement is based on the location of the work activities and not the accommodations, unless lodging is not available at the work activity, then the agency may authorize the rate where lodging is obtained.
Unless otherwise specified, the per diem locality is defined as "all locations within, or entirely surrounded by, the corporate limits of the key city, including independent entities located within those boundaries."
Per diem localities with county definitions shall include"all locations within, or entirely surrounded by, the corporate limits of the key city as well as the boundaries of the listed counties, including independent entities located within the boundaries of the key city and the listed counties (unless otherwise listed separately)."
When a military installation or Government - related facility(whether or not specifically named) is located partially within more than one city or county boundary, the applicable per diem rate for the entire installation or facility is the higher of the rates which apply to the cities and / or counties, even though part(s) of such activities may be located outside the defined per diem locality.
U.S. General Services Administration