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What is the difference between HTTP and HTTPS? An easy-to-understand explanation of SSL!

Posted: Sat Feb 01, 2025 8:35 am
by subornaakter20
2019-12-27(Updated: 2024-12-28 )
Email Delivery BasicsIT knowledge

This time, we will explain the difference between "http" and "https", which you often see when using the Internet.



Table of Contents [Hide]

1. What is http?
2. What is https?
3. Difference between http and https
3.1. How to distinguish between http (non-SSL) and https (SSL)
3.2. The dangers of http
3.3. Security of https
4. What is an SSL Server Certificate?
5. How to check the SSL server certificate
6. How to tell if a site is trustworthy
Check the URL
6.2. Check that the email address listed on the legal leads for sale site is not a free email address
6.3. Check reviews of services
7. Security measures are perfect! Arara Message
8. Frequently asked questions about http and https
What is http?
HTTP (Hyper Text Transfer Protocol) is a communication protocol for transmitting data such as text and images on a website between the server and the communication partner (website viewer) .

Even if you are using different environments to access the Internet, such as a PC or smartphone, by establishing common communication protocols, you can exchange website data using the same procedures.







What is https?
https (Hyper Text Transfer Protocol Secure) is an HTTP communication that uses SSL . SSL (Secure Socket Layer) is a communication protocol that has three functions: "encryption function to conceal the contents of communication," "authenticity of the communication partner," and "function to detect whether communication data has been tampered with."

The word "Secure" that these two terms have in common literally means "safe" or "danger-free." In short, https is an HTTP protocol with added security features.



Difference between http and https
The difference between http and https is whether the communication is encrypted or not. Because http communication is not encrypted, there is a high possibility that data may be tampered with or information may be leaked to a third party, whereas because https communication is encrypted, there is a low risk of data tampering or information leaks.



How to distinguish between http (non-SSL) and https (SSL)



The dangers of http
The Internet is now an indispensable part of our lives, and is used by many people. As a result, unauthorized access, wiretapping, data tampering, and cybercrimes have become commonplace. HTTP, which does not encrypt communication content, is highly susceptible to such crimes and is by no means safe.

Taking the example of mail, http is a "postcard" and https is a "letter in an envelope." If a malicious third party appears during delivery of a postcard (http), the contents can be seen and even added to.

On the other hand, a letter in an envelope (https) is safe because the contents cannot be seen by anyone other than the recipient due to the envelope (encryption).