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CA/B Forum Welcomes New Members

Since May 2013, five new Certificate Authorities have joined the CA/Browser Forum. We welcome the following global companies:

AS Sertifitseerimiskeskus
Disig, a.s.
Firmaprofesional
Prvni certifikacni autorita, a.s.
WoSign

Each new member has met the CA/B Forum requirements in issuing publicly trusted SSL certificates, undergoing a 3rd party audit, and has signed the Intellectual Property Rights (IPR) policy. The new members represent geographically diverse Certificate Authorities from Estonia, Slovakia, Spain, Czech Republic and China. We look forward to enhancing the overall knowledge base of the CA/B Forum with these additional members. This brings the total membership to 45 Certificate Authorities and Browsers.

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