Replay Attack

A form of attack where valid data transmission is intercepted and replayed to gain unauthorized access.

Understanding:

A Replay Attack occurs when an attacker intercepts and reuses valid authentication data (such as passwords or session tokens) to impersonate a legitimate user.

Common Applications and Use Cases:

Session Hijacking – Attackers replay stolen authentication tokens to gain access.
Network Traffic Spoofing – Adversaries intercept and resend network packets to exploit services.
Payment Fraud – Hackers reuse encrypted transaction data to perform fraudulent purchases.

Best Practices and Security Considerations:

Implement Time-Sensitive Tokens – Use nonce-based encryption to prevent token reuse.
Use Challenge-Response Authentication – Requires unique responses for each session.

Enable TLS Encryption – Protects data in transit from being captured and replayed.