Skip to content

Auth0 Anomaly Detection — Detecting and Responding to Anomalies

DodaTech Updated 2026-06-28 1 min read

In this tutorial, you'll learn about Auth0 Anomaly Detection. We cover key concepts, practical examples, and best practices to help you understand and apply this topic effectively.

Auth0 anomaly detection automatically identifies and mitigates suspicious authentication activity.

// Configure anomaly detection
const anomalyConfig = await auth0.anomaly.update({
  brute_force_protection: {
    enabled: true,
    max_attempts: 5,
    time_period_minutes: 10,
    block_duration_minutes: 30
  },
  breached_password_detection: {
    enabled: true,
    admin_notification_frequency: 'immediately',
    shields: ['block_compromised_credentials', 'notify_admin']
  }
});

// Custom anomaly action
exports.onExecutePostLogin = async (event, api) => {
  const geoip = event.request.geoip;
  const user = event.user;

  if (geoip && user.last_country && geoip.country_code !== user.last_country) {
    api.authentication.setRiskAssessment({
      level: 'medium',
      reasons: [`Login from new country: ${geoip.country_code} (previously: ${user.last_country})`]
    });

    if (event.authentication?.methods?.[0]?.type !== 'mfa') {
      api.authentication.enableMFA({
        provider: 'any',
        allowRememberBrowser: false
      });
    }
  }
};

Automated anomaly detection reduces security team workload by blocking or flagging suspicious activity in real time.

← Previous Auth0 Branding and Customization — Advanced Branding for Auth0 Next → Auth0 Session Management — Managing Authentication Sessions with Auth0

Built by the developers of DodaTech

Doda Browser, DodaZIP & Durga Antivirus Pro

Home Browse Auth0