image credit: Sylwia Bartyzel
Beginning September 1, 2020, Apple’s Safari browser will no longer trust SSL/TLS certificates issued for longer than 398 days, which is the equivalent of one year plus the renewal grace period. Apple cited its “ongoing efforts to improve web security” in the announcement earlier this year. The change affects the full lineup of Apple platforms:
This change will affect only TLS server certificates issued from the Root CAs preinstalled with iOS, iPadOS, macOS, watchOS, and tvOS. Additionally, this change will affect only