Nowadays, a large portion of Web traffic is encrypted using HTTPS. It is becoming increasingly prevalent, especially since the introduction of Let’s Encrypt, a Certificate Authority (CA) supported by major companies in the industry. Let’s Encrypt provides SSL/TLS certificates completely free of charge with 90-day validity. Generally, certificates are tied to one or more specific domain names, so if you have a certificate for “www.example.com,” you can only use it with this exact domain name. On the other hand, wildcard certificates are issued for a parent domain name and can be used with any subdomain of the parent domain. For instance, a wildcard certificate for… Read more

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