Sumsub Outage History

Sumsub experienced a DDoS attack that lasted 27.6 hours, prompting the implementation of countermeasures by their security team. The attack activity eventually subsided and services returned to normal operation. The incident was resolved with continued monitoring to ensure platform stability.

Sumsub's API was targeted by a DDoS attack that caused a 20-30x spike in requests, affecting service availability for 6.2 hours. The team successfully identified and blocked the attack source, working with Cloudflare to implement countermeasures and restore full operational status.

Sumsub's Support integration with Slack malfunctioned for 14.8 hours, causing support tickets to be automatically closed without manual intervention. The team restored normal operations and automatically reopened all affected tickets, then identified the root cause and implemented a permanent fix. The system has been confirmed operational with all affected support tickets processed.