Welcome to the CA/Browser Forum

The Certification Authority Browser Forum (CA/Browser Forum) is a voluntary gathering of Certificate Issuers and suppliers of Internet browser software and other applications that use certificates (Certificate Consumers).

More information for about the forum and information for Site Owners, Developers, Auditors and Assessors, and Potential Members can be found in the About section of this website.

Recent posts

Ballot SMC016: Equivalence with Ballots SC096 and SC097
March 17, 2026 by Stephen Davidsoon

Ballot S/MIME

[IPR Review] Ballot SMC016: Equivalence with Ballots SC096 and SC097This Review Notice is sent pursuant to Section 4.1 of the CA/Browser Forum’s Intellectual Property Rights Policy (v1.3). This Review Period of 30 days is for one Final Maintenance Guidelines. The complete Draft Maintenance Guideline that is the subject of this Review Notice may be found at https://cabforum.org/uploads/CA-Browser-Forum-SMIMEBR-1.0.14-Redline.pdf. Summary of Review Ballot for Review: Ballot SMC016: Equivalence with Ballots SC096 and SC097

2026-03-13 Minutes of the S/MIME Certificate Working Group
March 13, 2026 by

Minutes S/MIME

Minutes of SMCWG March 13, 2026 These are the Minutes of the meeting described in the subject of this message. Corrections and clarifications where needed are encouraged by reply.

Ballot SC095v3: Clean-up 2025
February 27, 2026 by Wayne Thayer

Ballot Server Certificates

Voting Results Certificate Issuers 24 votes in total:

More posts of the CA/Browser Forum

Latest releases

Server Certificate Requirements
SC097: Sunset all remaining use of SHA-1 signatures in Certificates and CRLs - Feb 25, 2026

Code Signing Requirements
v3.8 - Aug 5, 2024

What’s Changed CSC-25: Import EV Guidelines to CS Baseline Requirements by @dzacharo in https://github.com/cabforum/code-signing/pull/38 Full Changelog: https://github.com/cabforum/code-signing/compare/v3.7...v3.8

S/MIME Requirements
v1.0.13 - Ballot SMC015v2 - Mar 28, 2026

This ballot introduces requirements that a CA or RA must follow to rely upon a Mobile Drivers License (mDL) to provide evidence for the authentication of individual identity. It allows the use of mDL that conform to ISO/IEC 18013-5 and which may be verified by the CA or RA in conformance with ISO/IEC 18013-7. The CA or RA shall only accept mDL from an Issuing Authority that is legally authorized by the relevant government or jurisdiction to issue driving licenses. The draft also aligns the subsections of 3.2.4.2 (Validation of individual identity) to correspond more closely with those in 3.2.4.1 (Attribute collection of individual identity). It also includes minor editorial corrections. SMC015v2 was updated to remove an additional reference to the superceded ETSI EN 319 403. This ballot is proposed by Stephen Davidson (DigiCert) and endorsed by Ben Wilson (Mozilla) and Scott Rea (eMudhra).

Network and Certificate System Security Requirements
Version 2.0.5 (Ballot NS-008) - Jul 9, 2025