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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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57 sections with “Unauthorized use”: the first 40

  • FAR 1.602-3 Ratification of unauthorized commitments.
    (a) Definitions. Ratification, as used in this subsection, means the act of approving an unauthorized commitment by an official who has the authority to do so. Unauthorized commitment, as used in this subsection, means an agreement that i…
  • FAR 52.245-9 Use and Charges.
    …quishment of any rights it may have against the Contractor stemming from the Contractor's unauthorized use of Government property or any other failure to perform this contract according to its terms. (g) Use revocation. At any time during …
  • DFARS 252.204-7014 Limitations on the Use or Disclosure of Information by Litigation Support Contractors.
    …ovided written consent to such disclosure; (3) Take all precautions necessary to prevent unauthorized disclosure of litigation information; (4) Not use litigation information to compete against a third party for Government or nongovernmen…
  • DFARS 252.227-7025 Limitations on the Use or Disclosure of Government-Furnished Information Marked with Restrictive Legends.
    … party whose name appears in the legend, release or disclose such data or software to any unauthorized person. (ii) If the Contractor is a covered Government support contractor, the Contractor is also subject to the additional terms and co…
  • FAR 32.706-3 Clause for unenforceability of unauthorized obligations.
    The contracting officer shall insert the clause at 52.232-39, Unenforceability of Unauthorized Obligations in all solicitations and contracts.
  • DFARS 252.204-7009 Limitations on the Use or Disclosure of Third-Party Contractor Reported Cyber Incident Information.
    … (a) Definitions. As used in this clause— 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, …
  • DFARS 252.204-7012 Safeguarding Covered Defense Information and Cyber Incident Reporting.
    … measures that are commensurate with the consequences and probability of loss, misuse, or unauthorized access to, or modification of information. Compromise means disclosure of information to unauthorized persons, or a violation of the sec…
  • DFARS 252.247-7023 Transportation of Supplies by Sea.
    …r the purposes of the Prompt Payment clause of this contract. In the event there has been unauthorized use of foreign-flag vessels in the performance of this contract, the Contracting Officer is entitled to equitably adjust the contract, ba…
  • FAR 24.301 Privacy training.
    …ords or any other personally identifiable information; (4) The restriction on the use of unauthorized equipment to create, collect, use, process, store, maintain, disseminate, disclose, dispose, or otherwise access personally identifiable …
  • FAR 52.224-3 Privacy Training.
    …rds or any other personally identifiable information; (iv) The restriction on the use of unauthorized equipment to create, collect, use, process, store, maintain, disseminate, disclose, dispose or otherwise access personally identifiable i…
  • FAR 27.404-5 Unauthorized, omitted, or incorrect markings.
    (a) Unauthorized marking of data. (1) The Government has, in accordance with paragraph (e) of the clause at 52.227-14, the right to either return data containing unauthorized markings or to cancel or ignore the markings. (2) Agencies shall…
  • DFARS 202.101 Definitions.
    … designs, formulas, and/or specifications. 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, …
  • DFARS 227.7103-7 Use and nondisclosure agreement.
    …ecurity measures designed to protect these Data from inadvertent release or disclosure to unauthorized third parties. (3) The Recipient agrees to accept these Data “as is” without any Government representation as to suitability for intende…
  • FAR 12.302 Tailoring of provisions and clauses for the acquisition of commercial products and commercial services.
    …(5) Other compliances; (6) Compliance with laws unique to Government contracts; and (7) Unauthorized obligations. (c) Tailoring inconsistent with customary commercial practice. The contracting officer shall not tailor any clause or other…
  • FAR 13.202 Unenforceability of unauthorized obligations in micro-purchases.
    …U.S.C. 1341) if agreed to by the Government. The clause at 52.232-39, Unenforceability of Unauthorized Obligations, automatically applies to any micro-purchase, including those made with the Governmentwide purchase card. This clause prevent…
  • FAR 25.206 Noncompliance.
    …statute violations; (b) Unless fraud is suspected, notify the contractor of the apparent unauthorized use of foreign construction material and request a reply, to include proposed corrective action; and (c) If the review reveals that a co…
  • FAR 25.607 Noncompliance.
    …y American statute; (b) Unless fraud is suspected, notify the contractor of the apparent unauthorized use of foreign construction material and request a reply, to include proposed corrective action; and (c) If the review reveals that a co…
  • FAR 52.217-12 Reverse Auction Services.
    …icer to take all measures to protect Government data and Government-related data from any unauthorized disclosure. (4) Assert no right or license in the data gathered or generated during a reverse auction. Use Government-related data only …
  • FAR 52.232-39 Unenforceability of Unauthorized Obligations.
    As prescribed in 32.706-3, insert the following clause: Unenforceability of Unauthorized Obligations (JUN 2013) (a) Except as stated in paragraph (b) of this clause, when any supply or service acquired under this contract is subject to an…
  • DFARS 204.7302 Policy.
    …oprietary information that is not customarily shared outside of the company, and that the unauthorized use or disclosure of such information could cause substantial competitive harm to the contractor that reported the information. The Gover…
  • DFARS 252.239-7010 Cloud Computing Services.
    …e-as-a-service, and platform-as-a-service. 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, …
  • FAR 9.505-4 Obtaining access to proprietary information.
    … for the Government must agree with the other companies to protect their information from unauthorized use or disclosure for as long as it remains proprietary and refrain from using the information for any purpose other than that for which …
  • FAR 12.216 Unenforceability of unauthorized obligations.
    Many supplies or services are acquired subject to supplier license agreements. These are particularly common in information technology acquisitions, but they may apply to any supply or service. For example, computer software and services de…
  • FAR 17.802 Policy.
    …ect the terms and conditions of a Government solicitation or contract; (4) Protects from unauthorized use or disclosure and does not release outside of the Government— (i) All contractor bid or proposal information (see 3.104-1) and sourc…
  • FAR 23.106 Exemptions.
    …extent the Director determines necessary to protect intelligence sources and methods from unauthorized disclosure. (b) The head of an agency may exempt the following: (1) Particular agency activities and related personnel, resources, and …
  • FAR 27.402 Policy.
    …o prevent the compromise of these interests, agencies shall protect proprietary data from unauthorized use and disclosure. The protection of such data is also necessary to encourage qualified contractors to participate in and apply innovati…
  • FAR 32.705 Unenforceability of unauthorized obligations.
    Many supplies or services are acquired subject to supplier license agreements. These are particularly common in information technology acquisitions, but they may apply to any supply or service. For example, computer software and services de…
  • FAR 52.227-20 Rights in Data—SBIR Program.
    …ent purposes, but is relieved of all disclosure prohibitions and assumes no liability for unauthorized use of these data by third parties. This notice shall be affixed to any reproductions of these data, in whole or in part. (End of notice…
  • DFARS 247.573 General.
    …ng assessments of the contractor's past performance. (ii) In the event of a contractor's unauthorized use of foreign-flag vessels in the performance of a contract, the contracting officer is authorized to consider an equitable adjustment.
  • DFARS 252.204-7019 Notice of NIST SP 800-171 DoD Assessment Requirements.
    … (CUI)” and intended for internal DoD use only. The information will be protected against unauthorized use and release, including through the exercise of applicable exemptions under the Freedom of Information Act (e.g., Exemption 4 covers t…
  • DFARS 252.204-7020 NIST SP 800-171 DoD Assessment Requirements.
    … (CUI)” and intended for internal DoD use only. The information will be protected against unauthorized use and release, including through the exercise of applicable exemptions under the Freedom of Information Act (e.g., Exemption 4 covers t…
  • DFARS 252.227-7018 Rights in Other Than Commercial Technical Data and Computer Software—Small Business Innovation Research Program and Small Business Technology Transfer Program.
    …he time period during which the Government is obligated to protect SBIR/STTR data against unauthorized use and disclosure in accordance with SBIR/STTR data rights. The SBIR/STTR data protection period begins on the date of award of the cont…
  • FAR 2.101 Definitions.
    …icted data following the procedures in 10 CFR 1045.21; and (2) Must be protected against unauthorized disclosure according to Executive Order 12958, Classified National Security Information, April 17, 1995, or classified in accordance with…
  • FAR 3.104-4 Disclosure, protection, and marking of contractor bid or proposal information and source selection information.
    …actor bid or proposal information and source selection information must be protected from unauthorized disclosure in accordance with 14.401, 15.207, applicable law, and agency regulations. (c) Individuals unsure if particular information i…
  • FAR 46.101 Definitions.
    … service conforms to the contractual requirements. Counterfeit item means an unlawful or unauthorized reproduction, substitution, or alteration that has been knowingly mismarked, misidentified, or otherwise misrepresented to be an authenti…
  • FAR 52.212-4 Contract Terms and Conditions—Commercial Products and Commercial Services.
    …nts, Invoice, Other Compliances, Compliance with Laws Unique to Government Contracts, and Unauthorized Obligations paragraphs of this clause; (3) the clause at 52.212-5; (4) addenda to this solicitation or contract, including any license ag…
  • FAR 52.227-14 Rights in Data—General.
    … action, in accordance with paragraphs (e) and (f) of this clause; and (iv) Protect from unauthorized disclosure and use those data that are limited rights data or restricted computer software to the extent provided in paragraph (g) of thi…
  • FAR 52.246-26 Reporting Nonconforming Items.
    …lications versus a single or peculiar application. Counterfeit item means an unlawful or unauthorized reproduction, substitution, or alteration that has been knowingly mismarked, misidentified, or otherwise misrepresented to be an authenti…
  • DFARS 252.246-7007 Contractor Counterfeit Electronic Part Detection and Avoidance System.
    …orthy by a contractor or subcontractor. Counterfeit electronic part means an unlawful or unauthorized reproduction, substitution, or alteration that has been knowingly mismarked, misidentified, or otherwise misrepresented to be an authenti…
  • FAR 4.502 Policy.
    …onfidentiality commensurate with the risk and magnitude of the harm from loss, misuse, or unauthorized access to or modification of the information. (d) Agencies may accept electronic signatures and records in connection with Government co…

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.