Preparing for a TPN Assessment does not mean scrambling to implement new technology in the weeks before the assessor arrives. In fact, last-minute changes often create more confusion than clarity. What content owners and assessors want to see is evidence that your security program is real, practiced, and understood by the people running it.

Start with documentation review. The MPA Best Practices guide (available at mpasecurity.org) outlines exactly what controls are expected. Before any assessment begins, walk through your current policies, procedures, and technical configurations. Identify the gaps yourself, that gives you a head start and shows good faith to the assessor.

Next, brief the right people. Your assessment will likely involve conversations with your IT administrator, a facility manager, HR, and potentially a production supervisor. These individuals do not need to be security experts, but they should be able to speak confidently about their role in your security practices. A short internal meeting to align on key topics goes a long way.

Third, organize your evidence. Assessors work more efficiently and report fewer findings when evidence is easy to locate. Prepare folders (physical or digital) with network diagrams, access control lists, incident response plans, vendor contracts, and training records. You do not need everything to be perfect, but you need to be able to find it.

Finally, adopt a collaborative mindset. Some companies treat the assessor as an auditor to be managed. The most productive assessments happen when the client team treats the assessor as a consultant. Ask questions. Flag areas of uncertainty. Flag areas where you know you have gaps showing awareness of a weakness is actually a positive indicator of your security culture.

The goal is not to look perfect on assessment day. The goal is to accurately represent where your organization is, understand the findings, and build a plan that gets you where the industry needs you to be.