On Monday, 10 June, we experienced a service degradation affecting our primary SIP gateway, resulting in a brief interruption to inbound calling. The issue was caused by human error during the rollout of a new monitoring process, which inadvertently introduced instability into our high-availability load balancing systems.
The root cause was identified and mitigated quickly; however, the disruption impacted several critical load-balancing components before full service was restored.
While we typically avoid deploying changes during business hours, a security event on 7 June — a Distributed Denial of Service (DDoS) and credential stuffing attack — necessitated the urgent release of an emergency patch, which led to the unscheduled deployment and this incident.
We apologise for the disruption and appreciate your understanding as we continue to improve the resilience of our platform.