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SA-8(25)Security and Privacy Engineering Principles | Economic Security

IL5
IL6

>Control Description

Implement the security design principle of economic security in organization-defined systems or system components.

>DoD Impact Level Requirements

No specific parameter values or requirements for this impact level.

>Discussion

The principle of economic security states that security mechanisms are not costlier than the potential damage that could occur from a security breach. This is the security-relevant form of the cost-benefit analyses used in risk management. The cost assumptions of cost-benefit analysis prevent the system designer from incorporating security mechanisms of greater strength than necessary, where strength of mechanism is proportional to cost.

The principle of economic security also requires analysis of the benefits of assurance relative to the cost of that assurance in terms of the effort expended to obtain relevant and credible evidence as well as the necessary analyses to assess and draw trustworthiness and risk conclusions from the evidence.

>Related Controls

>Assessment Interview Topics

Questions assessors commonly ask

Process & Governance:

  • What acquisition policies and procedures address the requirements of SA-8(25)?
  • How are security and privacy requirements integrated into the acquisition process?
  • Who is responsible for ensuring that acquisitions comply with SA-8(25)?

Technical Implementation:

  • How are security requirements defined and documented in acquisition contracts?
  • What mechanisms ensure that acquired systems and services meet security requirements?
  • How do you validate that vendors and service providers comply with specified security controls?

Evidence & Documentation:

  • Can you provide examples of acquisition documentation that includes security requirements?
  • What evidence demonstrates that acquired systems meet security specifications?
  • Where is acquisition security documentation maintained throughout the system lifecycle?

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