CA/Browser Forum

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

2026-07-16 Minutes of the Server Certificate Working Group
July 16, 2026 by Wayne Thayer
Minutes Server Certificates
Minutes: CA/Browser Forum Server Certificate Working Group Minutes July 16, 2026 Opening Matters Dimitris Zacharopoulos chaired the meeting. The meeting was called to order. The meeting was recorded, the list of attendees is below, and the Note Well was read.
Ballot SC102: EV Domain Reuse and Validity Alignment
July 14, 2026 by
Ballot Server Certificates
Voting Results Certificate Issuers 19 votes in total:
2026-07-02 Minutes of the Server Certificate Working Group
July 2, 2026 by Wayne Thayer
Minutes Server Certificates
Minutes: Meeting Title: Server Certificate Working Group Teleconference
More posts of the CA/Browser Forum
Latest releases
Server Certificate Requirements
SC098: Process RFC 8657 CAA Parameters - Jun 16, 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
v1.0.15 - Ballot SMC017v2 - Jul 30, 2026

This ballot increases the minimum RSA key size for Root and Subordinate CA certificates in the S/MIME BRs from 2048 to 4096 bits for keys created after September 15, 2026, while retaining the 2048-bit minimum for Subscriber certificates. The ballot further requires that by September 15, 2027, CAs SHALL NOT issue Subscriber certificates from any Sub-CA whose RSA key modulus is less than 3072 bits, effectively sunsetting issuance from legacy 2048-bit Sub-CAs. The ballot also includes minor typographic corrections. This ballot is proposed by Martijn Katerbarg (Sectigo) and endorsed by Ben Wilson (Mozilla) and Stephen Davidson (DigiCert)

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

Edit this page
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).