Updated: 04/26/2017 by Computer Hope

digital certificatesMany websites use certificates or digital certificates to define their security and identity, so that computers visiting the sites know the sites are legitimate and feature proper security. These certificates must be obtained and from the proper organizations, as well as registered with them. They also expire and must be renewed to remain valid. A web browser may deny access to a website or at least warn the user when a website's certificate has expired and the identity or security of the site cannot be verified.

Certificate of Authenticity, Security terms, SSL