Credential Stuffing

4 days ago

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Credential stuffing is an automated attack using stolen username-password pairs to gain unauthorized access to other services.
Preventing credential stuffing is crucial for CIAM systems to avoid fraud, data theft, and reputational damage.
Multi-Factor Authentication (MFA) is the most effective defense but has trade-offs in user convenience.
Breached password detection checks against known compromised credentials to flag suspicious login attempts.
Rate limiting login requests is foundational but requires careful tuning to avoid impacting legitimate users.
Device cookies help distinguish trusted clients, enabling differential rate limiting.
Behavioral analysis detects bots by examining patterns like typing and mouse movements.
CAPTCHAs add friction but can be selectively applied based on risk factors.
Risk-based authentication assigns risk scores to login attempts, triggering additional verification for high-risk ones.
Monitoring and alerting are essential for detecting attacks and tuning defenses.
False positives must be managed to avoid locking out legitimate users.
Implementing credential stuffing defenses involves balancing security, user experience, and costs.
The right defense strategy depends on the platform's specific risks and user base.

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