Authentication & Access Control

2FA / MFA Bypass

Learn how two-factor authentication fails — skipping the MFA step entirely via direct API access, and brute forcing weak OTP codes with no rate limiting.

Intermediate35 min7 lessons2 hands-on

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First lesson free. The full module is part of Pro.

You'll be able to

✓Understand common 2FA implementations and their weaknesses
✓Bypass 2FA via response manipulation and skipping the verification step
✓Exploit rate-limit absence to brute force 6-digit OTP codes
✓Abuse backup codes and fallback flows to circumvent MFA

Lessons

1When "Secure" 2FA Is Just One API Call Away from Bypass
2Testing 2FA — Step Skip and OTP Brute Force
3MFA Types and Their Weaknesses
4Mini Lab — Identify the 2FA Weakness
5Your Turn: Tamper the VerdictHANDS-ON
6Module quiz
7Hands-on Lab: Exploit VaultlyHANDS-ON

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