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Duo Risk-Based Authentication is a security feature that enhances protection by automatically detecting and mitigating high-risk authentication attempts. It analyzes user behavior and adapts the authentication process based on detected risks, enforcing the most secure factors when necessary. This adaptive approach ensures that only trusted devices are remembered, while risky behaviors trigger additional authentication steps.

By continuously learning and identifying attack patterns, Duo provides robust security without compromising user experience.
For more detailed information on this subject, please refer to the Duo Risk-Based Authentication documentation here.