Sectigo migrates to new single-purpose Root CAs by 2026; legacy roots lose browser trust by 2027 under new security policies.

Martijn Katerbarg
Senior Compliance Engineer


PKI expert with 15+ years in WebPKI, SSL/TLS, and Signing Certificates. Compliance tech at Sectigo. Vice-Chair of the CA/B Forum S/MIME Working Group.
Martijn is a PKI expert with 15+ years of experience in WebPKI, SSL/TLS, and Signing Certificates. Having worked across Sales, Support, and Validation at Xolphin and Sectigo, he now specializes in compliance technology at Sectigo. As Vice-Chair of the CA/B Forum S/MIME Working Group, he contributes to industry standards and best practices.
Recent posts by Martijn Katerbarg
June 16, 20259 min read
Prevent data breaches with automated CLM, zero trust access, and real-time monitoring to secure enterprise digital infrastructure.
May 27, 20257 min read
Learn how SSL stripping attacks work and how to stop them with HSTS, TLS, certificate transparency, and automation.
April 3, 20257 min read
Post-quantum cryptography is designed to resist quantum threats, but timing attacks expose new risks. Discover how these attacks work & how to stop them.
March 19, 20258 min read
Automated CLM enhances security, compliance, and efficiency by managing digital certificates at scale, reinforcing digital trust for global enterprises.
February 24, 202510 min read
Effective encryption key management ensures secure data, proper key storage, rotation, and compliance, reducing risks and enhancing security.
February 11, 20258 min read
SSL/TLS certificates provide powerful protection and peace of mind. These digital certificates encrypt data to protect sensitive information from unauthorized access while also authenticating website identities, establishing a trusted foundation.
February 10, 20257 min read
Cloud-native CLM automates certificate management, boosting security, efficiency, and scalability while reducing costs and downtime.
February 4, 20254 min read
Apple’s proposal pushes automation, ensuring quantum-resilient security. Shorter SSL lifespans drive cryptographic agility for a post-quantum future.