Yesterday, AT&T experienced a massive outage that left tens of thousands of customers without cellular service. At the time, an investigation was carried out to discover if the cause was just a technical error or linked to a cyberattack. It appears the answer is the former and not the latter.
After conducting an investigation into the hours-long service outage, AT&T said the problem was not caused by a cyberattack but rather by a mistake on their part. The carrier didn’t explain too much in detail, but blamed the incident on an update error.
In a statement sent to the Associated Press, AT&T says:
Based on our initial review, we believe that today’s outage was caused by the application and execution of an incorrect process used as we were expanding our network, not a cyber attack.
At its peak, there were 73,000 reported incidents on the outage tracker DownDetector. While a majority of the outage affected AT&T customers, other carriers that use AT&T’s network were also affected. Cricket Wireless, which is owned by AT&T, had 9,000 reports of its own.
