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T-Mobile hacked, 76 million users' data leaked

Yet another massive scale hack, with T-Mobile's 76 million users' data possibly out in the wild

By Anthony Garreffa on Oct 11, 2017 10:34 pm CDT - 1 min, 27 secs reading time

It seems we can't go a week without a major breach in security at a huge company, with T-Mobile's website now reportedly hacked and the data from 76 million of its users could be exposed.

T-Mobile hacked, 76 million users' data leaked |

Security researcher Karak Saini discovered the bug in the API, where if someone searched for someone else's number, the API sending back the data would include that users' data. The data in question included users' email addresses, IMSI network code, billing account data, and more. All hackers had to do was know, or guess a user's phone number, and they could have virtually all of that person's information, and more.

Saini spoke with Motherboard, where he said: "T-Mobile has 76 million customers, and an attacker could have ran a script to scrape the data (email, name, billing account number, IMSI number, other numbers under the same account which are usually family members) from all 76 million of these customers to create a searchable database with accurate and up-to-date information of all users".

Saini told T-Mobile about the issue, with the telco fixing the security bug and reassuring everyone that only a small portion of their subscribers were open to this attack. T-Mobile added that "there is no indication that it was shared more broadly". Blackhat hackers have had access to this flaw for months, and could've taken the data from millions upon million of users' data.

One of the blackhat hackers had a response to the original Motherboard story, saying that the bug was known and exploited for "quite a while".

Anthony Garreffa

ABOUT THE AUTHOR - Anthony Garreffa

Anthony is a long time PC enthusiast with a passion of hate for games to be built around consoles. With FPS gaming since the pre-Quake days, where you were insulted if you used a mouse to aim, he has been addicted to gaming and hardware ever since. Working in IT retail for 10 years gave him great experience with high-end, custom-built PCs. His addiction to GPU technology is unwavering, and with next-gen NVIDIA GPUs about to launch alongside 4K 144Hz HDR G-Sync gaming monitors and BFGDs (65-inch 4K 120Hz HDR G-Sync TVs) there has never been a time to be more excited about technology.

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