Certificate Authority

What is a Certificate Authority (CA)?

A Certificate Authority (CA) is a trusted entity that issues digital signature certificates, such as SSL certificates for websites and Code Signing certificates for software. Digital certificates verify the ownership and authenticity of websites and software digital content. They ensure communications between a user's browser and a website or software product are encrypted and safe from eavesdropping. 

The CA acts as a middleman that both users and websites trust to vouch for the identity of the certificate holder. When a CA issues a certificate, it confirms that the domain or software owner receiving the certificate is who they claim to be, which helps to prevent impersonation or phishing attacks online. This makes CA’s a foundational part of the web's security infrastructure, enabling confidential and secure transactions.

Example:

A well-known example of a Certificate Authority is Sectigo, which is also the provider of SSL certificates and Code Signing certificates at Openprovider.