T-Mobile's Damage Control After Hacking Revelations

T-Mobile US Inc TMUS CEO Mike Sievert has apologized to the customers for the security hack that compromised the data of millions of accounts.
T-Mobile struck long-term partnerships with cybersecurity firm Mandiant and consulting firm KPMG LLG after the hack.
T-Mobile said it is actively coordinating with law enforcement on a criminal investigation.
See Also: The hacker made startling revelations on the company's security system on Thursday.
Sievert assured that the company had plugged the security hole, alleviating concerns over the hack's ongoing risk to customer data.
Hackers gained access to the company's testing environments and then used brute force attacks and other methods to make their way into other IT servers, including customer data.
T-Mobile US claimed to have notified nearly all current T-Mobile account holders who had their data compromised.
T-Mobile offered two years of free identity-protection services with McAfee's I.D. theft protection to the breach victims.
It recommends customers sign up for its free scam-blocking protection through Scam Shield.
T-Mobile was hacked twice in 2020 and in 2018, a network breach that compromised 2.5 million customers' data.
T-Mobile is the subject of at least two class-action lawsuits for failing to protect data. Last week, the U.S. Federal Communications Commission also launched an investigation on the breach.
Price Action: TMUS shares traded higher by 0.64% at $138.46 on the last check Friday.