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1 September
2020

Popular browsers will no longer trust SSL certificates with a validity of more than 398 days

Starting from September 1, 2020, certification centers will limit the validity of SSL certificates to one year, or to 398 days to be more explicit. This decision was made by CA/Browser Forum members in order to improve the security of websites and their users. It is assumed that this measure will reduce the number of certificates that were issued, but abandoned by the owners for various reasons. Such certificates are potentially dangerous because they can be hacked and used by attackers for phishing or other manipulation of users’ data.

Popular browsers like Mozilla, Safari, Chrome support the decision and inform their users that they will no longer trust certificates with a validity period of more than 398 days starting from September 1. However, the change will only affect the certificates issued after the specified date.