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Sectigo AddTrust External CA Root
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Access New Sectigo Public Certificate Chain
Updated on October 20, 2025
86 people found this helpful
Access New Sectigo Public Certificate Chain
Understanding Certificate Transparency (CT) Logs and Precertificates
Updated on September 18, 2024
48 people found this helpful
Understanding Certificate Transparency (CT) Logs and Precertificates
AAA Certificate Services Root (2028)
Updated on February 4, 2021
168 people found this helpful
AAA Certificate Services Root (2028)
Changes to Comodo CA Issuing CAs - NEW Sectigo branded issuing CAs
Updated on January 20, 2021
125 people found this helpful
Changes to Comodo CA Issuing CAs - NEW Sectigo branded issuing CAs as part of our planned transition from Comodo CA to Sectigo
Sectigo AddTrust External CA Root Expiring May 30, 2020
Updated on June 12, 2020
201197 people found this helpful
Read this article for a full explanation of cross signing, the AddTrust root expiration, and potential alternatives beyond that expiration date.
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