This summary is created by Generative AI and may differ from the actual content.
Overview
On June 30th, 2022 starting at 3:00AM UTC and ending July 2nd, 2022 at 1:20AM UTC, a version of telco fraudulent activity occurred in the Kenya region. Upon discovery, the event was mitigated by temporarily disabling inbound SMS messages to the region. Recipients in the Kenya region were unable to respond to SMS notifications temporarily but could respond through the PagerDuty app or website. Other notifications in the Kenya region and communications in all other regions were not impacted. Once permanent mitigations were in place, full SMS service in Kenya was restored without further incident.Impact
Recipients in the Kenya region were unable to respond to SMS notifications temporarily. However, they could still receive SMS notifications and respond through the PagerDuty app or website. Other regions and notification types were not impacted.Trigger
A telco carrier in the Kenya region began to engage in SMS telco fraud.Detection
The incident was detected when PagerDuty customers with recipients in Kenya were unable to respond to SMS messages, although they still received notifications.Resolution
Incoming replies in the Kenya region were disabled to mitigate the effects on PagerDuty infrastructure. Permanent mitigations were put in place, after which the temporary block was lifted and full SMS service was restored.Root Cause
The root cause was SMS telco fraud by a carrier in the Kenya region, which necessitated the temporary disabling of inbound SMS messages to mitigate the impact on infrastructure.
