Duo Security Outage History

Duo Security's AI Assistant experienced a complete service failure across all US deployments for 1.9 hours. The outage affected the AI Assistant functionality, preventing users from accessing this feature. The issue was resolved through mitigation measures, with full functionality restored and ongoing monitoring to ensure service stability.

Duo Security experienced authentication failures on their DUO57 system affecting the Core Authentication Service for 2.7 hours. The incident caused limited authentication failures, preventing some users from successfully authenticating through Duo's service. The issue was identified, fixed, and full functionality was restored after monitoring confirmed system performance had returned to normal.

Duo Security experienced an 8.4-hour incident where EU administrators could not access the AI Assistant on their first attempt, while existing users remained unaffected. The issue was identified as a problem specifically impacting first-time access for EU-based administrators. Normal functionality was fully restored after the team resolved the underlying access problem.

Duo Security experienced an issue preventing EU administrators from accessing the AI Assistant for the first time, while existing users could continue using the service normally. The incident affected multiple Duo components related to AI assistance functionality. The issue was resolved after 19 minutes of investigation.

Duo Security experienced a 14-minute incident where a subset of customers encountered intermittent delays or failures when enrolling desktop authenticators through the Admin Panel. Core authentication, SSO, and delivery services remained fully operational throughout the incident. The issue was resolved through mitigation actions, and services returned to normal operation.

Duo Security experienced elevated authentication latency for 1.1 hours, causing slower-than-normal response times and degraded performance during login attempts, though authentication requests continued to succeed. The issue affected the Core Authentication Service, with customers experiencing delays during the login process. The team applied mitigation steps that improved performance, and the issue was fully resolved with authentication returning to normal levels.

Duo Security experienced SMS delivery failures affecting all customers in the US region due to carrier issues, preventing users from receiving SMS passcode authentication messages. The incident lasted 2.7 hours while Duo worked with SMS providers to restore service, with users able to use alternative authentication methods like Duo Push during the outage. SMS passcode authentication was fully restored and functioning normally after the resolution.

Duo Security experienced VOIP phone call authentication failures affecting all US region deployments for 4.2 hours. Users were unable to authenticate via phone calls but could use alternative methods like Duo Mobile Push and SMS passcodes. The issue was resolved with VoIP authentication returning to normal operation and sustained success rates.

Duo Security experienced a 3.3-hour outage affecting VOIP phone call authentication for all US-based deployments, preventing users from completing two-factor authentication via voice calls. Users were advised to use alternative authentication methods including Duo Mobile Push notifications or SMS passcodes during the incident. The service was fully restored with normal VOIP authentication operations resuming after monitoring confirmed sustained success rates.

A power outage at a third-party data center in the UAE caused a 39-hour service outage affecting Duo Security's DUO81 deployment, impacting all core authentication services including SSO, push notifications, SMS delivery, phone calls, and admin panels. Due to persistent infrastructure instability in the region, Cisco Duo activated its disaster recovery process and migrated all affected customers to alternative data centers to restore full functionality.