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. Feel free to forward to any appropriate forum.

This document is one of a series of four that make up the revised IDNA protocol (draft-ietf-idnabis-defs, -tables, -protocol, -bidi). The four document are intertwined, so the security considerations for all should be considered at the same time. Having said that, I find no significant issues with the security considerations in any of the four documents, including this one. Given the messy nature of both internationalization and designing user input mechanisms, these documents do the best that they can, and are not noticeably worse (and are hopefully better) than the previous IDNA protocol.