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Simulations/Credential Stuffing

Credential Stuffing

Intermediate

Use leaked credentials from data breaches to test password reuse on a different service. Learn how attackers bypass rate limits and how to defend against credential stuffing.

Progress:
1
Password Reuse
2
Bypass Rate Limits
3
Apply Defenses
leaked_credentials.csv
Breach Database (5 credentials)
emailpasswordsource
john@gmail.comSummer2024!MegaCorp breach (2024)
sarah@yahoo.comP@ssw0rd123SocialApp leak (2023)
mike@outlook.comqwerty2023GameSite dump (2023)
lisa@gmail.comL1sa!SecureCloudStore breach (2024)
admin@corp.ioAdmin#2024PasteBin dump (2024)
Attack Configuration
Evasion Techniques
Server Defenses

Challenges

1
Password Reuse
Use leaked credentials from a breach to find accounts that reuse passwords on a different service.
▼ hints
2
Bypass Rate Limits
Rotate IPs and user-agents to bypass basic rate limiting and continue stuffing.
▼ hints
3
Apply Defenses
Enable CAPTCHA, HIBP check, and MFA to block the credential stuffing attack.
▼ hints
How to fix credential stuffing
Multi-layered defense against automated login attacks
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Frequently Asked Questions