T-Mobile Hit with Lawsuits Over Data Breach Affecting 37 Million

T-Mobile US Inc. is facing two proposed federal class actions alleging it was negligent in connection with a data breach announced just days ago that exposed the personal information of 37 million customers.

Christine Cortazal alleged that T-Mobile failed to exercise reasonable care to protect her sensitive personal information, according to a complaint filed Saturday in the US District Court for the Northern District of Florida.

Jennifer Baughman made nearly identical allegations in a complaint filed Sunday in the US District Court for the Central District of California.

T-Mobile said Jan. 19 in a federal filing that a hacker had ...