FAR 4.1903—Contract clause.
Plain-English Summary
FAR 4.1903 tells contracting officers when they must include the cybersecurity clause at 52.204-21, Basic Safeguarding of Covered Contractor Information Systems, in solicitations and contracts. The section is focused on one core topic: protecting Federal contract information when that information may reside in or pass through a contractor’s or subcontractor’s information system. In practice, this means the clause is not optional when the trigger is present; it must be inserted into the solicitation and resulting contract so the contractor is on notice of the basic safeguarding requirements. The rule also reaches subcontractors at any tier, so prime contractors need to understand that the safeguarding obligation can flow down through the supply chain whenever lower-tier entities may handle covered information. This section matters because it connects the government’s information-protection policy to the actual contract terms that make the requirement enforceable.
Key Rules
Insert the clause when triggered
The contracting officer must include 52.204-21 in solicitations and contracts when the contractor or any subcontractor at any tier may have Federal contract information residing in or transiting through its information system. If that condition exists, the clause is required.
Applies to subcontractors at any tier
The trigger is not limited to the prime contractor. If a subcontractor at any tier may handle Federal contract information in its systems, the clause must still be included in the prime solicitation and contract so the requirement can be passed down as needed.
Focuses on Federal contract information
The section is limited to situations involving Federal contract information, meaning information provided by or generated for the Government under a contract that is not intended for public release. The clause is tied to the presence of that information in contractor systems.
Covers information in or transiting systems
The requirement applies whether the information is stored in the system or merely passes through it. Contractors cannot avoid the clause by arguing that they do not permanently retain the information if their systems process it.
Contract clause makes the duty enforceable
By requiring insertion of the clause in the solicitation and contract, the rule ensures the safeguarding obligation becomes a contractual term. That gives the Government a clear basis to require compliance and address failures under the contract.
Responsibilities
Contracting Officer
Determine whether the contractor or any subcontractor at any tier may have Federal contract information in or through its information system, and insert clause 52.204-21 in the solicitation and contract whenever that condition exists.
Contractor
Review the solicitation and contract for the required clause, understand that basic safeguarding obligations apply when Federal contract information may be handled in its systems, and ensure the requirement is addressed in performance and subcontracting arrangements.
Subcontractors
Comply with the safeguarding requirement when they may have Federal contract information in their information systems, even if they are not the prime contractor, because the clause can apply at any subcontract tier.
Agency
Support contracting officers by ensuring acquisition personnel apply the clause consistently when the trigger is present and by maintaining procurement practices that protect Federal contract information.
Practical Implications
Contracting officers should screen acquisitions early for any possibility that Federal contract information will be stored, processed, or transmitted by the contractor or lower-tier subcontractors.
Prime contractors should assume the clause may need to flow down if subcontractors will touch covered information, and they should build that requirement into subcontract terms and oversight.
A common pitfall is overlooking information that only transits a system, such as email, file transfer, or cloud processing; the rule still applies in those cases.
Another frequent mistake is treating the clause as optional or waiting until after award to add it; FAR 4.1903 requires insertion in both the solicitation and the contract when triggered.
Because the clause is tied to contract formation, missing it can create compliance gaps, performance disputes, and avoidable cybersecurity risk for both the Government and the contractor.
Official Regulatory Text
The contracting officer shall insert the clause at 52.204-21 , Basic Safeguarding of Covered Contractor Information Systems, in solicitations and contracts when the contractor or a subcontractor at any tier may have Federal contract information residing in or transiting through its information system.