Wireless carrier T-Mobile suffered a major outage in the United States, that impacted service at other carriers, due to a massive DDoS attack. The attack started around noon, millions of customers were without voice and text service, in some cases customers were not able to access to the Internet. The source of the attack on the U.S. is currently unknown, experts speculate it may be China as the situation between South and North Korea is currently deteriorating. The Federal Communications Commission described the outage unacceptable and launched an investigation into the incident.”]
Source: https://securityaffairs.co/wordpress/104821/hacking/t-mobile-ddos-attack.html