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48 CFR · Federal Acquisition Regulation and Defense supplement

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The codified text (eCFR, as of 2026-10-02). Under the Revolutionary FAR Overhaul ↗, agencies follow class deviations with new text for many parts while the formal rules go through the Federal Register: check the solicitation and your contract's clauses, which rule.

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112 sections with “security interest”: the first 40

  • FAR 28.203-3 Release of security interest.
    (a) After consultation with legal counsel, the contracting officer shall release the security interest on the individual surety's assets using the Optional Form 91, Release of Personal Property from Escrow, or a similar release as soon as p…
  • FAR 32.202-4 Security for Government financing.
    …a) Policy. (1) 10 U.S.C. 3805and 41 U.S.C. 4505 require the Government to obtain adequate security for Government financing. The contracting officer shall specify in the solicitation the type of security the Government will accept. If the G…
  • FAR 32.409-3 Security, supervision, and covenants.
    …or a paramount lien in favor of the Government. This lien may supplement or replace other security requirements. The lien should cover— (1) Supplies being acquired; (2) Any credit balance in the special account in which advance payments a…
  • FAR 52.204-28 Federal Acquisition Supply Chain Security Act Orders—Federal Supply Schedules, Governmentwide Acquisition Contracts, and Multi-Agency Contracts.
    …s prescribed in 4.2306(a), insert the following clause: Federal Acquisition Supply Chain Security Act Orders—Federal Supply Schedules, Governmentwide Acquisition Contracts, and Multi-Agency Contracts (DEC 2023) (a) Definitions. As used in…
  • FAR 52.204-30 Federal Acquisition Supply Chain Security Act Orders—Prohibition.
    …s prescribed in 4.2306(c), insert the following clause: Federal Acquisition Supply Chain Security Act Orders—Prohibition (DEC 2023) (a) Definitions. As used in this clause— Covered article, as defined in 41 U.S.C. 4713(k), means— (1) In…
  • DFARS 252.239-7016 Telecommunications security equipment, devices, techniques, and services.
    As prescribed in 239.7411(d), use the following clause: Telecommunications Security Equipment, Devices, Techniques, and Services (DEC 1991) (a) Definitions. As used in this clause— (1) Securing means the application of Government-approve…
  • DFARS 209.104-1 General standards.
    …ed to perform the contract. (A) Under 10 U.S.C. 4874(a), no DoD contract under a national security program may be awarded to an entity controlled by a foreign government if that entity requires access to proscribed information to perform th…
  • DFARS 225.7003-3 Exceptions.
    …at the domestic availability of a particular electronic component is critical to national security. (2)(i) Commercially available off-the-shelf (COTS) items containing specialty metals, except the restrictions do apply to contracts or subc…
  • DFARS 225.7703-2 Determination requirements.
    …s: (a) For products or services to be used only by the military forces, police, or other security personnel of Afghanistan, the contracting officer shall— (1) Determine in writing that the product or service is to be used only by the mili…
  • FAR 52.228-11 Individual Surety—Pledge of Assets.
    …ond or a payment bond— (1) A pledge of assets that meets the eligibility, valuation, and security requirements described in the Federal Acquisition Regulation (FAR) 28.203-1; and (2) Standard Form 28, Affidavit of Individual Surety. (b) …
  • DFARS 209.572 Conflicts of interest in certain consulting services.
    …f China, the Chinese Communist Party, the People's Liberation Army, the Ministry of State Security, or other security service or intelligence agency of the People's Republic of China. (ii) The government of the Russian Federation or any en…
  • DFARS 225.7021-3 National security waiver of disclosure.
    …7021-2 if the SPE determines in writing that such disclosure would not be in the national security interests of the United States. This authority may not be delegated. See PGI 225.7021-3 for procedures and content requirements regarding the…
  • FAR 2.101 Definitions.
    …aking over by the contractor to a bank, trust company, or other financing institution, as security for a loan to the contractor, of its right to be paid by the Government for contract performance. Assisted acquisition means a type of inter…
  • FAR 4.2104 Waivers.
    …ion in an information-sharing environment when and as required by the Federal Acquisition Security Council (FASC) to facilitate interagency sharing of relevant acquisition supply chain risk information; (iii) Notify and consult with the Of…
  • FAR 4.2301 Definitions.
    …order means any of the following orders issued under the Federal Acquisition Supply Chain Security Act (FASCSA) requiring the removal of covered articles from executive agency information systems or the exclusion of one or more named source…
  • FAR 32.206 Solicitation provisions and contract clauses.
    … those financing payments by delivery payments (see paragraph (e) of this section); (iv) Security the contractor will provide for financing payments and any terms or conditions specifically applicable thereto (see 32.202-4); and (v) Frequ…
  • FAR 40.202-4 Exemptions.
    …1824, and 1825 of Pub. L. 118-31, 41 U.S.C. 3901 note prec.): (a) Department of Homeland Security, Department of Defense, Department of State, and the Department of Justice exemptions. The Secretary of Homeland Security, the Secretary of D…
  • FAR 52.212-5 Contract Terms and Conditions Required To Implement Statutes or Executive Orders—Commercial Products and Commercial Services.
    …02 of Division R of Pub. L. 117-328). __(10) 52.204-28, Federal Acquisition Supply Chain Security Act Orders—Federal Supply Schedules, Governmentwide Acquisition Contracts, and Multi-Agency Contracts. (DEC 2023) (Pub. L. 115-390, title II)…
  • FAR 52.232-12 Advance Payments.
    …er facilities for inspection of the Contractor's books, records, and accounts. (n) Other security. The terms of this contract are considered to provide adequate security to the Government for advance payments; however, if the administering…
  • FAR 52.232-29 Terms for Financing of Purchases of Commercial Products and Commercial Services.
    …nce with the contract; and there has been no impairment or diminution of the Government's security under this contract. (b) Special terms regarding termination for cause. If this contract is terminated for cause, the Contractor shall, on d…
  • DFARS 225.772-4 Exception.
    … Defense for Policy, without power of redelegation, determines that it is in the national security interest of the United States to enter into such contract; and (2) Not later than seven days before entering into such contract, the Under S…
  • DFARS 225.7004-6 Waiver of restrictions.
    …a timely basis; and (ii) The acquisition is necessary to acquire capability for national security purposes. (2) Document the waiver in a written determination and findings containing— (i) The factors supporting the waiver; and (ii) A ce…
  • DFARS 252.204-7012 Safeguarding Covered Defense Information and Cyber Incident Reporting.
    …d Cyber Incident Reporting (MAY 2024) (a) Definitions. As used in this clause— Adequate security means protective measures that are commensurate with the consequences and probability of loss, misuse, or unauthorized access to, or modifica…
  • DFARS 252.209-7012 Prohibition Relating to Conflicts of Interest in Consulting Services—Certification.
    …f China, the Chinese Communist Party, the People's Liberation Army, the Ministry of State Security, or other security service or intelligence agency of the People's Republic of China. (2) The government of the Russian Federation or any ent…
  • DFARS 252.225-7040 Contractor Personnel Supporting U.S. Armed Forces Deployed Outside the United States.
    …, emergency medical care, and basic human needs (e.g., bottled water, latrine facilities, security, and food when necessary) when performing their jobs in the direct vicinity of U.S. Armed Forces. Non-CAAF status does not apply to contracto…
  • DFARS 252.232-7012 Performance-Based Payments—Whole-Contract Basis.
    …ccounting system. FAR 52.232-32(m) does not require certification of incurred costs. (d) Security for financing. (1) Title to the property described in paragraph (f) of the clause at FAR 52.232-32, Performance-Based Payments, is the prefer…
  • DFARS 252.232-7013 Performance-Based Payments—Deliverable-Item Basis.
    …ccounting system. FAR 52.232-32(m) does not require certification of incurred costs. (d) Security for financing. (1) Title to the property described in paragraph (f) of the clause at FAR 52.232-32, Performance-Based Payments, is the prefer…
  • DFARS 252.239-7010 Cloud Computing Services.
    …Compromise means disclosure of information to unauthorized persons, or a violation of the security policy of a system, in which unauthorized intentional or unintentional disclosure, modification, destruction, or loss of an object, or the co…
  • FAR 6.302-7 Public interest.
    …rmy, the Secretary of the Navy, the Secretary of the Air Force, the Secretary of Homeland Security for the Coast Guard, or the Administrator of the National Aeronautics and Space Administration; or (ii) the head of any other executive agenc…
  • FAR 8.405-6 Limiting sources.
    …iv) This posting requirement does not apply when disclosure would compromise the national security (e.g., would result in disclosure of classified information) or create other security risks. (b) Items peculiar to one manufacturer. An item…
  • FAR 16.505 Ordering.
    …(a)(4)(iii)(A) of this section do not apply when disclosure would compromise the national security (e.g., would result in disclosure of classified information) or create other security risks. (D) The justification is subject to the screeni…
  • FAR 32.304-6 Other collateral security.
    The following are examples of other forms of security that, although seldom invoked under guaranteed loans, may be required when considered necessary for protection of the Government interest: (a) Mortgages on fixed assets. (b) Liens agai…
  • FAR 52.228-17 Individual Surety—Pledge of Assets (Bid Guarantee).
    …ty on a bid guarantee— (1) A pledge of assets that meets the eligibility, valuation, and security requirements described in the Federal Acquisition Regulation (FAR) 28.203-1; and (2) Standard Form 28, Affidavit of Individual Surety. (b) …
  • DFARS 222.7404 Waiver.
    …ty Secretary personally determines that the waiver is necessary to avoid harm to national security interests of the United States, and that the term of the contract or subcontract is not longer than necessary to avoid such harm. (b) The wa…
  • DFARS 237.173-4 Waiver.
    …r a period of 60 days, if the Secretary determines such a waiver is vital to the national security interests of the United States. The Secretary may renew a waiver issued pursuant to this paragraph for an additional 30-day period, if the Se…
  • FAR 4.2305 Waivers.
    …ritical functions, or considerations related to the national interest, including national security reviews, national security investigations, or national security agreements; (5) Any alternative mitigations to be undertaken to reduce the r…
  • FAR 5.102 Availability of solicitations.
    … in paragraph (a)(4) of this section, when— (i) Disclosure would compromise the national security (e.g., would result in disclosure of classified information, or information subject to export controls) or create other security risks. The f…
  • FAR 22.807 Exemptions.
    …ements of E.O. 11246 may be excluded from a contract subject to E.O. 11246: (1) National security. The agency head may determine that a contract is essential to the national security and that the award of the contract without complying wit…
  • FAR 25.703-4 Waiver.
    …onal Emergency Economic Powers Act, provide rationale why it is essential to the national security interests of the United States for the President to waive the prohibition on contracting with this offeror, as required by section 6(b)(5) of…
  • FAR 27.203-1 General.
    …e and Censorship), and related statutes, and may be contrary to the interests of national security. (b) Upon receipt of a patent application under paragraph (a) or (b) of the clause at 52.227-10, Filing of Patent Applications—Classified Su…

FAR (chapter 1)

DFARS (chapter 2, Defense)

Source: eCFR, 48 CFR chapters 1 and 2 (GPO GovInfo bulk data) ↗. Rule changes in progress: FAR, DFARS. Terms: glossary.