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Federal agencies investigating whether AT&T outage was caused by cyber attack
A network disruption is affecting AT&T customers in the U.S. Thursday, prompting federal agencies to investigate whether the outage was caused by a cyberattack.
Two sources briefed on the situation told ABC News that the FBI and Department of Homeland Security (DHS), among other agencies, are now urgently investigating to determine whether the AT&T outages are the result of a cyber attack or a hack, or simply some sort of technical malfunction. ET, the U.S. Cybersecurity and Infrastructure Security Agency (CISA) reported, according to a confidential memo obtained by ABC News, that "the cause of the outage is unknown and there are no indications of malicious activity." "There is a nationwide AT&T outage that is preventing wireless customers from making and receiving any phone calls (including to 9-1-1)," the Charlotte-Mecklenburg Police Department, which serves the Charlotte, North Carolina area, said in a post on X.
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