HTTPS - HyperText Transfer Protocol Secure

HTTPS - HyperText Transfer Protocol Secure

What is HTTPS?

HTTP with encryption (SSL/TLS). The "S" stands for Secure. HTTPS encrypts all data transmitted between browser and server, protecting it from interception.

How HTTPS Works:

• Encryption layer: SSL/TLS encrypts HTTP traffic
• Padlock icon: Browser shows padlock in address bar for HTTPS sites
• Certificate: Server has digital certificate verifying its identity
• Encrypted data: Even if intercepted, data is unreadable without decryption key
• Port: Uses port 443 by default

HTTPS Advantages:

• Secure: Data encrypted - cannot be read if intercepted
• Privacy: Protects passwords, credit cards, personal information
• Authentication: Certificate verifies you're connecting to real website (not fake)
• Integrity: Detects if data is tampered with during transmission
• Trust: Users trust sites with padlock icon
• SEO benefit: Google ranks HTTPS sites higher

When HTTPS is Essential:

• Banking: Protect financial transactions and account details
• Shopping: Secure credit card information
• Email: Protect login credentials and message content
• Social media: Secure passwords and private messages
• Any login: Prevent password interception

HTTP vs HTTPS:

Aspect	HTTP	HTTPS
Security	NOT secure (plain text)	Secure (encrypted)
Port	80	443
Padlock Icon	No	Yes
Certificate	Not required	Required (SSL/TLS)
Use Case	Public information only	Logins, payments, sensitive data