Sensitive information exchanged during the engagement, and especially the final report, is encrypted: a secure communication method is established with the organisation before testing (for example encrypted email or an encrypted archive of the report using a strong algorithm, noting that email subject lines are not protected), and the parties agree what may be put in writing and what should be conveyed only verbally.
This control maps to 2 controls across 2 other frameworks. If you already hold one of them, the evidence you collected for it is the starting point here rather than new work.
Every mapping shown was judged rather than inferred from wording similarity, and the ones that failed review are published too. See the coverage reports and what was rejected.
The graph holds this control, the 2 it maps to, and the evidence behind each claim, over MCP and REST.