What is HTTPS? Everything You Need to Know (2023)

By Tibor Moes / Updated: June 2023

What is HTTPS? Everything You Need to Know (2023)

What is HTTPS?

Security is a top priority in the digital world, and as technology advances, so do the methods to protect our online interactions. One key player in ensuring a secure browsing experience is HTTPS. But what is HTTPS, and why is it so important? Let’s explore the world of HTTPS, how it works, and why it plays a crucial role in keeping your online activities safe and secure.


  • HTTPS (Hypertext Transfer Protocol Secure) is the secure version of HTTP, the protocol used to communicate over the internet.

  • HTTPS uses SSL/TLS encryption to add an extra layer of security. That way, data is sent securely between the web server and the browser.

  • In addition, HTTPS requires authentication and validation to make sure that the data is not tampered with or seen by any malicious third-party.

Don’t become a victim of cybercrime. Protect your devices with the best antivirus software and your privacy with the best VPN service.

Understanding HTTPS: A Brief Overview

HTTP, or Hypertext Transfer Protocol, is the primary protocol used for communication and data transfer on the World Wide Web. However, HTTP alone does not provide the security needed for sensitive information, such as login credentials and bank account details. That’s where HTTPS, or Hypertext Transfer Protocol Secure, comes in to save the day.

HTTPS is the secure version of HTTP, providing a more private and secure connection by encrypting the data sent between your web browser and the website you’re visiting. When you visit an HTTPS website, the address bar in modern web browsers like Google Chrome will display a padlock icon, indicating a secure connection. The HTTPS URL begins with “https://” instead of “http://”, signifying that the website uses SSL/TLS (Secure Sockets Layer/Transport Layer Security) encryption protocols for secure communication.

In a nutshell, HTTPS is an essential layer of security that helps protect sensitive data and maintain privacy during your online browsing sessions. By encrypting communication and data transfer between your web browser and the website, HTTPS ensures that unauthorized parties cannot eavesdrop or tamper with the information being exchanged.

The Encryption Process Behind HTTPS

So how does HTTPS manage to provide this extra layer of security? The answer lies in the encryption protocols it uses, namely SSL/TLS. These protocols utilize an asymmetric public key infrastructure to encrypt data transmission, keeping your sensitive information safe from prying eyes.

The process begins with the server sending its SSL/TLS certificate containing the public key to the web browser. This public key is used to encrypt the data, which can only be decrypted by the corresponding private key held by the server. This unique combination of keys ensures that even if someone intercepts the encrypted data, they won’t be able to read it without the private key.

The SSL/TLS protocols have three main goals: authentication, keeping data private, and ensuring overall security. By using a Public Key Infrastructure (PKI) system, the protocols enable secure communication and data transfer between two parties over the internet.

In addition to encryption, SSL/TLS certificates also play a crucial role in verifying the identity of the provider you’re dealing with. Certificate authorities issue these certificates, helping to establish trust between the web browser and the website.

The Importance of HTTPS for Online Security

Now that we’ve discussed how HTTPS works, let’s delve into why it is so essential for online security. Websites that require login credentials or involve financial transactions should definitely use HTTPS to ensure the protection of user data and secure transactions.

HTTPS provides users with protection against various cyber threats, such as eavesdropping, man-in-the-middle (MitM) attacks, and DNS spoofing. By encrypting the data sent between the web browser and the website, HTTPS ensures that only authorized parties can access and alter the information being exchanged.

In terms of security, HTTPS is a significant upgrade from plain HTTP. HTTPS is less prone to cyber and malware attacks, providing a more robust defense against unauthorized access to sensitive information.

Diving into Port 443: HTTPS Connection Point

When discussing HTTPS, it’s essential to mention the role of port 443. This port is used for HTTPS connections, in contrast to HTTP, which uses port 80. Port 443 is the default port for establishing secure network connections, ensuring that data transmitted between the web browser and the website is encrypted and protected.

While port 443 is primarily used for HTTPS connections, it can also handle HTTP connections if needed. This versatility allows for a seamless transition between secured and unsecured connections, depending on the requirements of the website and user preferences.

The SSL/TLS Handshake: Establishing Secure Communication

To fully understand how HTTPS secures your online communications, we need to explore the SSL/TLS handshake process. The handshake is a series of back-and-forth communications between the web browser and the website that verify each other’s identity and sets up the parameters for encrypted communication.

During an HTTPS connection, the browser and server must agree on the connection parameters. The SSL/TLS handshake plays a crucial role in this process, establishing a secure connection by using a public key and a unique private key that work together.

The SSL/TLS handshake ensures the safety of any data sent over the HTTPS port by checking the provider’s identity and setting up the connection parameters for secure communication. This process helps to create a trusted environment for online interactions, protecting user data from unauthorized access and tampering.

HTTPS and the CIA Triad: Confidentiality, Integrity, and Availability

The CIA triad, an abbreviation for Confidentiality, Integrity, and Availability, is a model used to ensure information security. HTTPS plays a vital role in supporting the CIA triad, making sure that data remains confidential, unaltered, and accessible.

By encrypting data sent between the web browser and the website, HTTPS ensures that sensitive information remains confidential, preventing unauthorized access or eavesdropping. Moreover, HTTPS helps maintain data integrity by making sure that the information is unaltered during transmission. This ensures that the data you send and receive remains accurate and reliable, providing a secure environment for online communication and transactions.

Benefits of Switching to HTTPS

Using HTTPS instead of HTTP offers numerous advantages, including improved security, user trust, and potential SEO benefits. By switching to HTTPS, you provide your users with a more secure and private browsing experience, protecting them from malicious actors and potential data breaches.

Beyond security, HTTPS can also provide some SEO benefits and better site performance. Websites using HTTPS often experience faster loading times and improved user experience, factors that can contribute to higher search engine rankings.

In summary, switching to HTTPS not only improves your website’s security, but also helps build user trust and can lead to better search engine rankings. It’s a wise investment for any website owner who values the privacy and security of their users.

Avoiding Common Pitfalls When Implementing HTTPS

Transitioning to HTTPS can be a rewarding but challenging process. To ensure a smooth and secure implementation, it’s important to be aware of common pitfalls and how to avoid them. One crucial aspect to consider is certificate management. Handling digital certificates, which authenticate and secure HTTPS connections, involves creating, renewing, and revoking certificates. Properly managing these certificates is essential for maintaining a secure browsing environment.

Another common issue is mixed content, which occurs when a website is served over HTTPS while some content is still served over HTTP. This can create security vulnerabilities since the HTTP content isn’t encrypted. To avoid mixed content issues, ensure that all content on your website is served over HTTPS.

Lastly, it’s essential to redirect all HTTP traffic to HTTPS, ensuring that all traffic is encrypted and secure. This also helps prevent mixed content issues and provides a seamless browsing experience for your users.


HTTPS is an essential layer of security that protects sensitive data, login credentials, and financial transactions from unauthorized access and tampering. By using encryption protocols like SSL/TLS and establishing secure connections through port 443, HTTPS offers a more secure browsing experience compared to plain HTTP.

Implementing HTTPS on your website not only improves security, but also builds user trust and can result in potential SEO benefits. As technology and cyber threats continue to evolve, adopting HTTPS is a vital step in safeguarding your online presence and providing a secure environment for your users.

In a world where online security is paramount, HTTPS serves as a reliable and powerful tool for protecting our digital lives. By understanding the ins and outs of HTTPS, you can ensure that your website and its users are well-protected and secure in today’s ever-evolving digital landscape.

How to stay safe online:

  • Practice Strong Password Hygiene: Use a unique and complex password for each account. A password manager can help generate and store them. In addition, enable two-factor authentication (2FA) whenever available.
  • Invest in Your Safety: Buying the best antivirus for Windows 11 is key for your online security. A high-quality antivirus like Norton, McAfee, or Bitdefender will safeguard your PC from various online threats, including malware, ransomware, and spyware.
  • Be Wary of Phishing Attempts: Be cautious when receiving suspicious communications that ask for personal information. Legitimate businesses will never ask for sensitive details via email or text. Before clicking on any links, ensure the sender's authenticity.
  • Stay Informed. We cover a wide range of cybersecurity topics on our blog. And there are several credible sources offering threat reports and recommendations, such as NIST, CISA, FBI, ENISA, Symantec, Verizon, Cisco, Crowdstrike, and many more.

Happy surfing!

Frequently Asked Questions

Below are the most frequently asked questions.

What is HTTPS and why it is used?

HTTPS (Hypertext Transfer Protocol Secure) is the secure version of HTTP, the protocol used to communicate over the internet. HTTPS adds an extra layer of security using encryption so that data is sent securely between the web server and the browser.

What is HTTPS in simple terms?

In simple terms, HTTPS is an encrypted connection that ensures the security of information sent between your web browser and the website you’re visiting. It’s like having a secure tunnel for your data to travel through, ensuring that no one can access it except you.

How is HTTPS different from HTTP?

HTTPS is a more secure version of HTTP as it encrypts the data being sent between the website and the user. In addition, HTTPS requires authentication and validation to make sure that the data is not tampered with or seen by any malicious third-party. As a result, HTTPS is much safer than HTTP when sending sensitive information.

Does HTTPS mean a website is safe?

Although HTTPS can provide an extra layer of security, it does not guarantee that the website is safe and trustworthy. A website with HTTPS enabled may still engage in malicious activities, and users should take additional steps to make sure they are accessing reliable websites. No, HTTPS does not mean a website is safe. Although it provides encryption for transmitted information, users should still be cautious and take additional precautions when visiting a website.

Author: Tibor Moes

Author: Tibor Moes

Founder & Chief Editor at SoftwareLab

Tibor is a Dutch engineer and entrepreneur. He has tested security software since 2014.

Over the years, he has tested most of the best antivirus software for Windows, Mac, Android, and iOS, as well as many VPN providers.

He uses Norton to protect his devices, CyberGhost for his privacy, and Dashlane for his passwords.

This website is hosted on a Digital Ocean server via Cloudways and is built with DIVI on WordPress.

You can find him on LinkedIn or contact him here.

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