Trust Boundary

  • Formal
  • Trust boundary is a term in computer science and security used to describe a boundary where program data or execution changes its level of "trust". The term refers to any distinct boundary within which a system trusts all sub-systems (including data).
  • Practical
  • Trust boundary is a term in computer science and security used to describe a boundary where program data or execution changes its level of "trust". The term refers to any distinct boundary within which a system trusts all sub-systems (including data). An example of an execution trust boundary would be where an application attains an increased privilege level (such as root). A data trust boundary is a point where data comes from an untrusted source. For example, user input or a network socket.

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