Yes. Auth0 lets you block or allow traffic using Tenant Access Control List (ACL) based on IP address, ASN, device fingerprint, or geographic location. This helps stop malicious requests, like high-velocity attacks or traffic from risky regions, before they reach your login flow.

Auth0 uses a layered defense approach to improve security before, during, and after login. Identity threats such as brute-force attacks and credential stuffing are addressed across the full authentication flow, not just at the point of login, to reduce risk at every stage of the customer journey. It combines multiple coordinated security controls, including brute-force protection, suspicious IP throttling, and breached password detection. Together, these protections help detect and block automated login attempts, limit repeated failures, and prevent the use of known compromised credentials.

Learn more here

Yes. Auth0 includes Bot Detection that identifies and mitigates automated attacks such as credential stuffing and fake account creation. It uses statistical models, IP reputation, and traffic pattern analysis to detect when login or signup activity is likely coming from a bot. When risk is detected, Auth0 can trigger additional verification to reduce bot-driven abuse while minimizing friction for legitimate users.

Learn more here

Adaptive MFA evaluates each login attempt using contextual signals such as device, location, and IP reputation. If the login is considered high risk ( low confidence score), Auth0 triggers a step-up MFA challenge. It only prompts users for additional verification when risk is high, balancing strong security with a frictionless user experience.

Learn more here

Yes, you can customize when to challenge based on the information from the risk assessors. You can define what constitutes a 'high-risk' login, such as a login from a specific geographic region or a device that hasn't been seen in 30 days, allowing you to tune your security posture to balance protection with a frictionless user experience.

Learn more here

Breached Password Detection helps protect your application from account takeover by identifying when users attempt to sign up or log in with credentials that have been exposed in known data breaches. Auth0 monitors publicly disclosed breaches and checks whether a user’s credentials appear in those datasets. If compromised credentials are detected, Auth0 can automatically block the login or signup attempt, prevent the use of the breached password, and require the user to reset their password before regaining access. It can also notify users and administrators so they can take immediate action.

Learn more here

Credential Guard is Auth0's advanced version of Breached Password Detection that helps identify compromised credentials significantly faster with broader coverage. While standard Breached Password Detection relies on publicly disclosed breach data which can take months to surface, Credential Guard identifies exposed credentials within hours. When compromised credentials are detected, Auth0 can immediately block their use, require password resets, and notify users or administrators, helping prevent account takeover and credential stuffing attacks before they escalate.

Learn more here

Yes. Auth0 supports FIDO2-certified hardware security keys (e.g., YubiKey). These phishing-resistant factors provide strong authentication by requiring physical possession of the device.