E-Commerce Security

E-Commerce Security

E-Commerce security protects online transactions, customer data, and business operations.

Threats

Phishing, malware, SQL injection, XSS, DDoS, man-in-the-middle, identity theft.

Encryption

Symmetric (AES, DES) and asymmetric (RSA, ECC). Hybrid systems combine both for efficiency and key distribution.

SSL/TLS and HTTPS

Encrypted connections between browsers and servers. Handshake authenticates server, negotiates encryption. HTTPS is mandatory for e-commerce.

Digital Signatures

Verify authenticity and integrity using private key. Digital certificates (X.509) from Certificate Authorities. PKI manages certificates.

Authentication

Passwords, two-factor (OTP/authenticator), biometrics, OAuth/SSO. Multi-factor reduces compromise risk.

Privacy and Compliance

GDPR, CCPA regulations. Consent, right to access/delete, breach notification, data minimisation.

Summary

E-Commerce security requires defence in depth: encryption, secure protocols, authentication, and regulatory compliance.