Posts Tagged: s/mime

S/MIME

New S/MIME Certificate Standards: ACME Automation and Preparation for the Post-Quantum Cryptography Era

For many years, S/MIME email certificates remained in the shadow of TLS certificates. Although they played a critical role in ensuring the confidentiality and integrity of electronic communication, their development was relatively slow, and validation processes were often perceived as archaic, manual, and difficult to scale. In 2025, however, this situation began to change noticeably.

Sectigo Root CA

Sectigo Public Root CA Migration – What You Need to Know in 2025 and 2026

In 2025, Sectigo initiated one of the most significant infrastructure changes in its PKI ecosystem, namely the migration of certificate issuance to new, proprietary Public Root Certification Authorities. This change affects all major product lines, including SSL/TLS certificates (DV, OV, EV) and S/MIME, and has a direct impact on how trust chains are built in […]

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