I have reviewed this document as part of the security directorate's ongoing effort to review all IETF documents being processed by the IESG. These comments were written primarily for the benefit of the security area directors. Document editors and WG chairs should treat these comments just like any other last call comments. draft-ietf-urnbis-rfc2141bis-urn-20: Uniform Resource Names (URNs) Updates: 2141, 3406 Intended status: Standards Track IMO the document is ready for IESG approval. I have no further additions or comments. Section 6.4.4. Security and Privacy covers security and privacy concerns mostly by referencing considerations from RFC6943, 3552 and 6973. Overall, I think it is sufficient. I also noted the shepherd document with regard to the overall working group consensus on this document: https://datatracker.ietf.org/doc/draft-ietf-urnbis-rfc2141bis-urn/shepherdwr iteup/ Best regards, Tobias