T-Cell US admitted a data breach on Monday, but indicated it was still investigating whether or not any user data had been stolen, a day after a web-based discussion group claimed that the personal information of more than 100 million of its customers had been released.
In a blog post, the telecom provider claimed that the entry-level used to enter the data had been closed. It did not confirm the number of datasets impacted.
“We are conducting an extensive analysis alongside digital forensic experts to understand the validity of these claims, and we are coordinating with law enforcement,” the company said.
“We have been working around the clock to investigate claims being made that T-Mobile data may have been illegally accessed. We take the protection of our customers very seriously and we are conducting an extensive analysis alongside digital forensic experts to understand the validity of these claims, and we are coordinating with law enforcement.
We have determined that unauthorized access to some T-Mobile data occurred, however, we have not yet determined that there is any personal customer data involved. We are confident that the entry point used to gain access has been closed, and we are continuing our deep technical review of the situation across our systems to identify the nature of any data that was illegally accessed. This investigation will take some time but we are working with the highest degree of urgency. Until we have completed this assessment we cannot confirm the reported number of records affected or the validity of statements made by others.
We understand that customers will have questions and concerns, and resolving those is critically important to us. Once we have a more complete and verified understanding of what occurred, we will proactively communicate with our customers and other stakeholders.”
The accusations of a data breach were originally revealed on Sunday by Vice, a US-based digital media platform.
The forum post does not identify T-Mobile, according to Vice’s Motherboard investigation, but the hacker informed Vice that they acquired data from T-Mobile servers and that they obtained data from over 100 million users.
In mid-afternoon trade, T-stock Mobile’s was down 2.8 percent.