Information was as recent as June 1st.
T-Mobile had 64 million records purportedly stolen from its systems exposed on a data leak site.
According to research by Cybernews, included in the leaked dataset, which had information as recent as June 1st, were individuals' full names, birthdates, full addresses, phone numbers, email addresses, device IDs, IP addresses, cookie IDs, and tax IDs.
Additional details as to whether the number of records represents the number of people affected by the incident remain lacking. However, such a data trove was noted by Cybernews researchers to include details that were not available in earlier leaks.
"If this data is legitimate, exposing 64M lines of highly sensitive information poses a serious threat of identity theft/fraud, surveillance, and further, better-targeted attacks on customers," said researchers.
Such a development comes months after T-Mobile was ordered to pay more than $15 million to
resolve four data breach incidents between 2021 and 2023.
Written by
Dan Raywood is a B2B journalist with 25 years of experience, including covering cybersecurity for the past 17 years. He has extensively covered topics from Advanced Persistent Threats and nation-state hackers to major data breaches and regulatory changes.
He has spoken at events including 44CON, Infosecurity Europe, RANT Forum, BSides Scotland, Steelcon and the National Cyber Security Show, and served as editor of SC Media UK, Infosecurity Magazine and IT Security Guru. He was also an analyst with 451 Research and a product marketing lead at Tenable.
