Confidentiality in countervailing-duty investigations requires justified protection, meaningful non-confidential summaries, and possible disregard of undisclosable information Rule 8 governs confidential information supplied during countervailing-duty investigations. Information provided confidentially must remain undisclosed when the designated authority is satisfied that confidentiality is justified, unless the provider specifically authorises disclosure. The authority may require a sufficiently detailed non-confidential summary, and the provider must explain why summarisation is impossible if it takes that position. Where confidentiality is unwarranted, or the provider refuses public disclosure or disclosure in generalised or summary form, the authority may disregard the information.