Website Security Certificate
Definition - What does Website Security Certificate mean?
Techopedia explains Website Security Certificate
Websites that use security certificates are identifiable through the HTTPS address starter and the padlock icon that appears in the address bar, with the location differing according to the browser being used. When the padlock icon is clicked, it shows certificate details such as the identity of the website owner, the issuing CA, and the encryption and connection mechanisms being used.
Security certificates are therefore part of HTTPS for two purposes: to validate that the user is actually connected to the site that they think they are connected with and establish a way to encrypt the communications between the user and the website. The current standard for website security certificates is SSL certificates.