Secure Sockets Layer (SSL) is a cybersecurity protocol responsible for creating a secure connection between a web server and a browser. It uses a combination of public-key and private-key encryption to protect personal information (e.g., credit card numbers, login credentials, email addresses, etc.) users provide on a website.
To establish a secure connection, an SSL certificate is installed on a web server. It is a digital certificate that authenticates a server’s identity and domain ownership and encrypts any information provided through the website.
An SSL certificate is an indication that the connection to a server is guaranteed safe.