On February 6, 2024, our Content Delivery Network (CDN) experienced partial delivery performance degradation in Korea. This incident was primarily caused by a bug in the DDoS protection module.
Excessive CPU utilization on the CDN edge servers located in the Korean datacenter. This was the result of a bug in the DDoS protection module, which led to heightened CPU consumption during the attack, thereby severely affecting our delivery services.
This incident led to intermittent 5xx errors and timeouts affecting CDN delivery within Korea, persisting for 1 hour and 27 minutes.
In response to this incident and to bolster our defense against future DDoS attacks, we are implementing the following action items:
We are committed to continuously improving our systems and processes to ensure high availability and performance of our CDN services, particularly in the face of evolving cybersecurity threats.