Science Knowings: JavaScript Course For Social Media



Welcome! Today, we're switching gears to discuss HTTPS and SSL/TLS. These technologies are crucial for protecting your websites and data in the digital age.

What is HTTPS?

HTTPS (Hypertext Transfer Protocol Secure) is a secure version of HTTP. It uses SSL/TLS to encrypt communication between your website and visitors' browsers.


HTTP sends data in plaintext, making it vulnerable to eavesdropping. HTTPS, on the other hand, encrypts data, protecting it from unauthorized access.

Unencrypted data Encrypted data
Less secure More secure
Can be intercepted Interception is more difficult
Typically port 80 Typically port 443

Benefits of HTTPS

  • Increased security
  • Improved search engine ranking
  • Increased customer trust
  • Compliance with regulations

How HTTPS Works

When you visit an HTTPS website, your browser establishes a secure connection using SSL/TLS. This involves exchanging encryption keys and establishing a secure channel for data transfer.

SSL/TLS Certificates

SSL/TLS certificates are digital credentials that verify the identity of your website and enable encryption. They contain information like your website's domain name, organization name, and expiration date.

Types of SSL/TLS Certificates

  • Domain Validation (DV): Validates domain ownership.
  • Organization Validation (OV): Validates domain ownership and organization identity.
  • Extended Validation (EV): Provides the highest level of validation, including strict identity checks.

Implementing HTTPS with SSL/TLS

To implement HTTPS, you need to obtain an SSL/TLS certificate and configure your web server to use it. Follow your web server's documentation for specific instructions.

HTTP Strict Transport Security (HSTS)

HSTS is a security header that forces browsers to use HTTPS for specific websites, even if the user types in HTTP. It helps prevent accidental fallback to insecure connections.

Next Up: Data Encryption

In our next session, we'll dive into Data Encryption, a crucial aspect of protecting sensitive information. Join us to learn more and enhance the security of your web applications.