Replay Attack Agent
Your session security specialist that detects replay attack vulnerabilities and validates nonce implementation.
What is Replay Attack Agent?
The Replay Attack Agent specializes in identifying replay attack vulnerabilities where attackers can intercept and reuse valid requests, tokens, or sessions. It validates nonce implementation, token expiration, and anti-replay mechanisms to ensure your application properly prevents replay attacks.
Problems It Solves
Payment & Transaction Replay
Attackers intercept payment requests and replay them to charge customers multiple times or transfer funds repeatedly. Without proper replay prevention, every transaction is vulnerable.
Session Token Reuse
Stolen or expired session tokens can be replayed to gain unauthorized access. Applications that don't invalidate old tokens are vulnerable to session replay attacks.
API Request Replay
API requests without nonces or timestamps can be intercepted and replayed. Attackers can repeat actions like account creation, privilege escalation, or data modification.
Authentication Bypass
Authentication requests (login, OAuth flows, password resets) can be replayed if not properly protected, allowing attackers to bypass authentication.
How Replay Attack Agent Works
Replay Attack Detection
Tests API endpoints, authentication flows, and payment systems for replay vulnerabilities. Intercepts and replays requests to validate anti-replay mechanisms.
Nonce Validation
Verifies that APIs implement cryptographic nonces correctly. Tests that nonces are single-use, unpredictable, and properly validated.
Timestamp & Expiration Testing
Validates that requests include timestamps and that servers reject expired requests. Tests time-based replay prevention mechanisms.
Token Lifecycle Analysis
Tests session token, JWT, and OAuth token lifecycle. Verifies tokens are properly invalidated, can't be reused after logout, and expire appropriately.
User Benefits
Prevent Payment Fraud
Stop replay attacks that charge customers multiple times or execute duplicate transactions. Protect payment processing integrity.
Session Security
Ensure stolen or expired sessions can't be replayed to gain access. Properly invalidate tokens and prevent session fixation.
API Integrity
Validate that critical API operations can't be replayed. Protect state-changing operations from duplicate execution.
Authentication Protection
Prevent authentication bypass through replayed login requests, OAuth codes, or password reset tokens.
Compliance Requirements
Meet PCI-DSS requirements for replay attack prevention in payment systems. Demonstrate proper anti-replay controls.
Real-World Attack Simulation
See exactly how attackers would replay requests against your application. Understand impact before exploitation.
Real-World Use Cases
Payment Replay Vulnerability
Discovered API endpoint accepting identical payment requests. Demonstrated ability to charge customer 10 times with single intercepted request.
Session Token Reuse
Found logout endpoint not invalidating JWT tokens. Old tokens could be replayed for hours after logout to access account.
OAuth Code Replay
Identified OAuth authorization codes could be reused multiple times. Attackers could replay codes to hijack accounts.
Technical Capabilities
Core Capabilities
Integrations
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