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AT&T failed to test disastrous update that kicked all devices off network | AT&T caused outage that blocked 92 million calls, 25,000 attempts to reach 911.
AT&T caused outage that blocked 92 million calls, 25,000 attempts to reach 911.
A government investigation has revealed more detail on the impact and causes of a recent AT&T outage that happened immediately after a botched network update. The FCC Public Safety and Homeland Security Bureau analyzed network outage reports and written responses submitted by AT&T and interviewed AT&T employees. The Bureau finds that the extensive scope and duration of this outage was the result of several factors, all attributable to AT&T Mobility, including a configuration error, a lack of adherence to AT&T Mobility's internal procedures, a lack of peer review, a failure to adequately test after installation, inadequate laboratory testing, insufficient safeguards and controls to ensure approval of changes affecting the core network, a lack of controls to mitigate the effects of the outage once it began, and a variety of system issues that prolonged the outage once the configuration error had been remedied.
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