Hackers claimed to have stolen 64 million records from T-Mobile, including sensitive customer information.
The leaked database contained names, email addresses, phone numbers, and other personal data but T-Mobile denies any connection to it.
The cybercriminals shared the database on a dark web forum, stating it was obtained as early as June 1, 2025.
The database comprised 64 million lines with customer details like full names, dates of birth, tax IDs, addresses, phone numbers, email addresses, and more.
This type of data is valuable for creating personalized phishing attacks leading to identity theft, fraud, and ransomware attacks.
T-Mobile confirmed the leaked data was not related to them or their customers when approached by Cybernews.
The Cybernews team couldn't authenticate the data completely but highlighted the potential risks if it was genuine.
T-Mobile had previously been targeted by hackers, with claims of breaching their systems and stealing data, which the company denied.