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Electronic signature activation

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Certum's electronic signature?

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Electronic signature renewal

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Technical announcements

21.10.2025

Sunsetting the clientAuth EKU from Certum SSL/TLS certificates

From October 2025, the SSL/TLS certificate industry is undergoing a significant change – public SSL/TLS certificates will no longer include the Extended Key Usage (EKU) TLS Web Client Authentication (clientAuth) extension. This certificate extension allowed a single SSL/TLS certificate to be used for both server and client authentication in mutual TLS (mTLS) scenarios.

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13.08.2025

Certum implements new Root CAs

From September 15, 2025, Certum will implement new Root CAs in accordance with Mozilla’s and Google’s policies.

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12.12.2024

Changes in Certum service availability during the 2024 Holiday Season

We would like to inform you that December 24th, 2024 (Christmas Eve) is a non-working day in our company. The exception is non-qualified certificates, which will be issued from 7:00 AM to 2:00 PM (GMT+1).

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