CA/Browser Forum

Members

The CA/Browser Forum includes the following members:

Certification Authorities

Certificate Consumers

  • 360 Browser
  • Apple
  • Brave
  • Cisco Systems
  • Comodo Security Solutions
  • Google
  • Microsoft
  • Mozilla
  • Mozilla/Thunderbird
  • Opera Software AS
  • QikFox Cybersecurity Systems Inc.
  • rundQuadrat
  • Zertificon

Associates

  • ACAB Council
  • CertiPath
  • CPA Canada/WebTrust
  • DarkMatter
  • ETSI
  • Keyfactor
  • tScheme
  • US Federal PKI Management Authority
  • Zone Media

Interested Parties

  • AGMS Information Technology Solutions
  • Andrea Fossati
  • Andrew Ayer
  • Arno Fiedler
  • Beijing Zhongyu Yongxin Network Technology Co., Ltd
  • CERT-EE
  • Certizen Limited
  • Cloudflare
  • David Croston (Private Person)
  • Deloitte LLP
  • Digitalberry
  • EFF (Electronic Frontier Foundation)
  • Envers
  • Grace Cimaszewski (Private Person)
  • ICANN
  • India PKI Forum
  • Insta Advance OY
  • Intel
  • KPMG AG
  • KPMG Korea
  • KPMG Taiwan
  • K Software LLC
  • Leader Telecom BV
  • Maria Merkel (Private Person)
  • Nathalie Weiler (Private Person)
  • Peercraft
  • Prateek Mittal (Private Person)
  • PSW
  • Rameez Rehman (Private Person)
  • Ryan Hurst (Private Person)
  • Santosh Pandit (Private Person)
  • Schellman and Company LLC
  • Sebastian Nielsen (Private Person)
  • Sergey Pavlovskiy (Private Person)
  • SINAM Limited Liability Company
  • TeleTrust
  • TurkTrust
  • Wojciech Jakubowski (Private Person)
  • Zane Ma (Private Person)
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).