AT&T believes the February 22 outage was “caused by the application and execution of an incorrect process” as it was expanding its network, “not a cyber attack” (ABC News)

ABC News:
AT&T believes the February 22 outage was “caused by the application and execution of an incorrect process” as it was expanding its network, “not a cyber attack”  —  AT&T says they have “restored wireless service to all our affected customers.”