Acme CAA Extensions to Become Mandatory
The CA/Browser Forum has voted to make ACME CAA extensions mandatory starting in March 2027. This change aims to enhance cryptographic validation for certificate issuance, particularly for high-profile websites. The article discusses the importance of combining DNSSEC, ACME, and CAA to improve security in Web PKI.
- ▪The CA/Browser Forum's decision will require ACME CAA extensions to be implemented by March 2027.
- ▪This change is intended to provide stronger cryptographic validation for high-profile websites.
- ▪The article emphasizes the need for robust security measures in Web PKI, particularly through the integration of DNSSEC and CAA.
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| Original publisher | Feistyduck |
| Canonical URL | https://www.feistyduck.com/newsletter/issue_137_acme_caa__extensions_to_become_mandatory |
| Publication time | Fri, 29 May 2026 00:07:09 +0000 |
| Retrieval time | 2026-05-29T00:29:38.907Z |
| Last seen | 2026-05-29T00:29:38.907Z |
| Headline source | Publisher (no WeSearch rewrite) |
| Excerpt source | publisher body |
| Excerpt method | First ~120 words (~800 chars) of extracted publisher body, fair-use limited. |
| Summary | WeSearch · cerebras-chat (WeSearch summarizer) |
| Summary source text | contentText |
| Citation coverage | Summary is a WeSearch-generated derivative; primary citation is the original publisher URL. |
| Cluster | JRzmwcF8UKZ7 |
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| Ranking reason | Story pages are not engagement-ranked. Hub feeds use recency, with optional source-diversified chronological ordering (cap consecutive stories per source). No personalized ranking. |
| Publisher visit | Yes — open original |
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| Retrieval / RAG | May the content be exposed for third-party retrieval-augmented generation? | Not asserted |
| Model training | May the content be used to train AI models? | Not asserted |
| Commercial reuse | May the content be reused commercially? | Not permitted |
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Opening excerpt (first ~120 words) tap to expand
Cryptography & Security Newsletter 137 ACME CAA Extensions to Become Mandatory 28 May 2026 Feisty Duck’s Cryptography & Security Newsletter is a periodic dispatch bringing you commentary and news surrounding cryptography, security, privacy, SSL/TLS, and PKI. It's designed to keep you informed about the latest developments in this space. Enjoyed every month by more than 50,000 subscribers. Written by Ivan Ristić. The CA/Browser Forum has voted to make ACME CAA extensions mandatory starting in March 2027. This change is one of the last remaining pieces needed to support strong, cryptographically-validated domain validation in Web PKI.
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