This can be convenient, in that you need to enroll for fewer certificates for your infrastructure. Instead of purchasing multiple SSL/TLS certificates from a public certificate authority (CA) for each sub-domain, a single wildcard certificate can be used to secure a website and all of its subdomains. This is why some organizations, or certain groups within them, opt to use wildcard certificates. Most companies don’t just have a single website, though, they have multiple domains and sub-domains (e.g. Each of these certificates has an expiration date, at which point they need to be updated and replaced. In simple terms, if you visit a website with an SSL/TLS certificate, the address will start with “ rather than “ ” (the s stands for secure). SSL/TLS certificates are typically used to verify trust between public-facing websites and the web browser on your device. ![]() Wildcard Certificates: A Double-Edged Sword Looks like forgot to renew their TLS certificate □ *.wg. #ssl #cert /rRzFHPeuEE
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