Protocols exist for every aspect of the Internet. They are a universal set of rules and standards that are used to communicate between machines. The language used to communicate between web browsers and servers is known as Hyper Text Transfer Protocol, or HTTP. It is made up of "get" and "pull" requests that are made for computers used to ask for and send documents. A protocol also exists to ensure the safety of these requests, known as Hyper Text Transfer Protocol Secure, or HTTPS. The HTTPS guarantees that any HTTP requests are secure and protected.
The HTTP request can hold private and personal information of users, and since the Internet is completely open, the request are more likely to be hacked. HTTPS contains secure sockets and transport layers to be layers of security around any communication to protect it.