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TLS Certificate Lifespan Reduced to Enhance Security

First seen 3 Dec 2025, 08:38 UTC • •

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ThreatCluster •March 12, 2026 at 13:27 UTC

The CA/Browser Forum approved a significant reduction in the maximum lifespan of TLS certificates, starting from 398 days to 200 days on March 15, 2026. This change, proposed by Apple, aims to improve security and will continue to decrease the lifespan to 100 days in 2027 and 47 days by 2029. Organizations using TLS certificates will need to adapt their renewal processes accordingly.

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