Is it necessary to have headers?

1. Are headers required?
2. Why do we need headers?
3. How important are security headers?
4. Are headers more secure than body?

Are headers required?

HTTP headers re used to convey additional information between the client and the server. Although they are optional they make up the most of the http request and are almost always present.

Why do we need headers?

The HTTP headers are used to pass additional information between the clients and the server through the request and response header. All the headers are case-insensitive, headers fields are separated by colon, key-value pairs in clear-text string format.

How important are security headers?

Often ignored by developers, HTTP security headers are good firewalls that can prevent a lot of common vulnerabilities exploit. As your site might be subject to vulnerabilities you don't know about, it's always important to have additionals safety measures, especially when it comes to the end user.

Are headers more secure than body?

From cryptography point of view they are all equal as being transferred all together.