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CISM study material · question 83 of 1000

A supplier the organisation trusts subcontracts part of the work to a firm the organisation has never assessed, and argues that its own trusted status should carry over. Which property of trust rebuts this?

  1. Trust is generally not transitive
  2. Trust varies over time as circumstances change
  3. Trust is measured only in relative terms
  4. Trust is always earned rather than mandated
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Answer: A. Trust is generally not transitive

SP 800-39 states trust is generally not transitive: trusting one party does not oblige an organisation to trust the parties that party in turn trusts, which is why subcontractors need their own assessment.

Source: NIST SP 800-39 (NIST) — Sec. 2.6 Trust and Trustworthiness

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