Security News > 2021 > August > T-Mobile CEO: Hackers brute-forced their way through our network

Today, T-Mobile's CEO Mike Sievert said that the hackers behind the carrier's latest massive data breach were able to brute force their way through T-Mobile's network after gaining access to testing environments.
In 2018, info belonging to millions of T-Mobile customers was accessed by hackers.
In March 2020, hackers gained access to T-Mobile employees' email accounts.
In February 2021, threat actors targeted up to 400 customers in SIM swap attacks after gaining access to an internal T-Mobile application.
After hacking into their Washington state data center, he purportedly gained access to credentials for more than 100 servers on T-Mobile's network.
According to Binns' claims, the initial attack vector used to breach the T-Mobile network was an Internet-exposed and unprotected router.