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. The document defines an update to the HTTP Prefer header field to specify how it can be used by a WebDAV client. This document is Ready. The security consideration section of this document refers to the security consideration section of RFC 7240. RFC 7240 actually does not say much. While this is a bit funny I couldn't find any negative security implications caused by draft-murchison-webdav-prefer-14. IMPORTANT NOTICE: The contents of this email and any attachments are confidential and may also be privileged. If you are not the intended recipient, please notify the sender immediately and do not disclose the contents to any other person, use it for any purpose, or store or copy the information in any medium. Thank you.