HTTPS

Protocols πŸ”— β€’ Web Security πŸ•ΈοΈ β€’ Cryptography πŸ”’ β€’ Sec+ Glossary πŸ“– β€’ Difficulty: free

What is HTTPS?

HTTPS, or Hypertext Transfer Protocol Secure, is the secure version of HTTP that uses encryption and certificate-based trust to protect web traffic between a user and a website.

Examples

  • A user signs in to an online banking site over HTTPS so their credentials are encrypted while traveling across the internet.
  • An e-commerce store uses HTTPS to protect payment details, account sessions, and customer browsing activity from interception.

Discover πŸ”Ž

When you open a website, you are often sending and receiving more than simple page content. You may be entering passwords, viewing personal information, loading session cookies, or exchanging private business data. If that communication travels openly, anyone who can observe the traffic may be able to read or interfere with it. HTTPS exists to prevent that.

This is why HTTPS became such a fundamental part of modern web security. It helps make web communication private, trustworthy, and resistant to tampering. Without it, even ordinary browsing can expose users to credential theft, spying, or content manipulation. With it, the browser and website can communicate in a much safer way.

Remember: HTTPS is not just about keeping websites looking professional. It protects the connection between the user and the site.

Summary πŸ“

HTTPS is the secure form of HTTP and protects web traffic by using TLS, encryption, and certificates. Its main purpose is to make communication between a browser and a website more private, trustworthy, and resistant to tampering. It is essential for modern web security, but it protects the connection, not the entire honesty or quality of the website itself.

Open the interactive lesson Browse more topics

Tip: The interactive version includes progress tracking, decks, and premium deep dives.