Confidential information protection governs disclosure and summary requirements under bilateral safeguard investigation rules and authority oversight. Confidential information provided on a confidential basis must be treated as confidential and not disclosed without the supplier's specific authorisation. Suppliers may be required to furnish a non-confidential summary or explain why summarisation is impossible. The authority may disregard information if confidentiality is unjustified or the supplier refuses disclosure unless appropriate sources satisfactorily demonstrate its correctness.