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Announcing the formation of the Code Signing Working Group – Call for Participants

The CA/Browser Forum has chartered a Code Signing Working Group, the purpose of which is to come up with Baseline Requirements to reduce the incidences of signed malware. The CA/Browser Forum would like to invite interested third parties to participate. The working group meets bi-weekly by phone and had its first face to face meeting in Munich on June 13th coinciding with the regular CA/Browser Forum meeting.

Interested parties will need to:

  1. Review the Intellectual Property Rights policy (/IPR_Policy_V1.pdf) and complete the IPR agreement which can be found here: /IPR_Agreement_V1.pdf
  2. Send an email to questions@cabforum.org with your name, organization (if applicable), contact details and the signed agreement with the subject: Code Signing Working Group Participation

Once the Chair determines all is in order, you will be added to the mailing list and invited to the conference calls.

As the title of this group states, this is a Working Group, meaning everyone is expected to contribute in some fashion. Please do not apply if you can’t devote time to attend and participate in the discussion.

Latest releases
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 SMC015v2 was updated to remove an additional reference to the superceded ETSI EN 319 403.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

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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).