Dear Kantara member, This notice is to inform you that draft assessment criteria documents aligned with NIST SP 800-63B-4 are open for your Review and Comment. This notice will be sent out for public review and comment on January 21, 2026. As a member of Kantara, you are receiving an advance copy and opportunity for review and comment ahead of the public comment period. The following draft documents are available for review: - SP 800-63-4A <https://kantarainitiative.org/download/kiaf-2430-sp-800-63-4a-sac-soca-v0-3/> — Identity Proofing - Previously released. *Comments due no later than 20 January 2026* - SP 800-63-4B <https://kantarainitiative.org/download/nist-sp-800-63b-rev-4-sac-soca/> — Authentication and Lifecycle Management - Kantara Identity Assurance Framework: SP 800-63-4B Service Assessment Criteria (SAC) & Statement of Criteria Applicability (SoCA) – (KIAF-2440 SP 800-63-4B SAC-SoCA v0.3 <https://kantarainitiative.org/download/nist-sp-800-63b-rev-4-sac-soca/> ) The public comment period will open January 21 and close March 9, 2026. *Please note:* Participants are encouraged to review each tab in the draft spreadsheets. Cross-referencing will be completed during the final publication process. You do not need to provide comments on cross-referencing or formatting, as those will be done in the final publication. Please focus your comments and recommendations on substantive areas. Feedback may be submitted using the comment form: Kantara 800-63-4 Criteria Feedback.xlsx <https://kantarainitiative.org/download/kantara-800-63-4-criteria-feedback-v1/> All comments, questions, and requests for clarification should be sent to: feedback@kantarainitiative.org. Your participation is important. A small technical writing team has produced this draft, but a full review and comment by the field, and in particular by Kantara members, will ensure it is robust and meets the needs of providers, assessors, and relying parties. Thank you for your participation and attention to this matter. Sincerely, *Kay Chopard | **Executive Director* Email: kay@kantarainitiative.org LinkedIn: @KantaraInitiative <https://www.linkedin.com/company/kantara-initiative/>