An organization wants to hire a third-party company to perform a vulnerability assessment on the organization's internal systems. Which of the following will best ensure confidentiality of the results and provide a legally binding document?

A Memorandum of Understanding (MOU) outlines the terms and understanding between parties in a cooperative endeavor. While it can establish general expectations and goals, an MOU typically lacks the specific legal protections for confidentiality required in a vulnerability assessment scenario.

A Master Service Agreement (MSA) governs the overall relationship between parties providing and receiving services. While it may include some confidentiality provisions, an MSA is not specifically tailored to safeguarding sensitive assessment information or ensuring legal protection for the assessment results.

A Service Level Agreement (SLA) defines the level of service to be provided by a vendor and the metrics for measuring its performance. While SLAs are crucial for service quality, they do not primarily address confidentiality concerns or provide the necessary legal framework for protecting vulnerability assessment results.