Author Topic: T-Mobile Detects and Stops Ongoing Security Breach  (Read 224 times)

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T-Mobile Detects and Stops Ongoing Security Breach
« on: August 24, 2018, 04:27:36 PM »
T-Mobile USA announced a security breach late last night. The company says its cyber-security team discovered and shut down unauthorized access to its customers' data on Monday, August 20.

The telco says an attacker was exfiltrating personal data such as customer names, billing ZIP codes, phone numbers, email addresses, account numbers, and account types (prepaid or postpaid).

T-Mobile said the hacker (or hackers) did not gain access to passwords, social security numbers, or any financial information.

Impacted customers will receive an SMS, letter in the mail, or a phone call to notify them. The US telco says it informed law enforcement authorities about the breach.

Less than 3% of T-Mobile customers impacted

A T-Mobile spokesperson told Motherboard that less than 3% of its customer base was affected. T-Mobile reported 75.62 million customers at the end of Q2 2018. That would put the breach at around 3.9 million customers, still a considerable number.

As some T-Mobile users have pointed out, even if the hackers did not get their hands on any financial data or passwords, the breach makes it easier for the attacker to port  (SIM swap) numbers.

The telco company is redirecting all worried customers to its customer care service available via phone call, its official website, or Apple iMessage and Business Chat.

"We take the security of your information very seriously and have a number of safeguards in place to protect your personal information from unauthorized access. We truly regret that this incident occurred and are so sorry for any inconvenience this has caused you," T-Mobile said.

Quote

Dear Customer –

Out of an abundance of caution, we wanted to let you know about an incident that we recently handled that may have impacted some of your personal information.

On August 20, our cyber-security team discovered and shut down an unauthorized access to certain information, including yours, and we promptly reported it to authorities. None of your financial data (including credit card information) or social security numbers were involved, and no passwords were compromised. However, you should know that some of your personal information may have been exposed, which may have included one or more of the following: name, billing zip code, phone number, email address, account number, and account type (prepaid or postpaid).

If you have questions about this incident or your account, please contact Customer Care at your convenience. If you are a T-Mobile customer, you can dial 611, use two-way messaging on MyT-Mobile.com, the T-Mobile App, or iMessage through Apple Business Chat. You can also request a callback or schedule a time for your Team of Experts to call you through both the T-Mobile App and MyT-Mobile.com. If you are a T-Mobile For Business or Metro PCS customer, just dial 611 from your mobile phone.

We take the security of your information very seriously and have a number of safeguards in place to protect your personal information from unauthorized access. We truly regret that this incident occurred and are so sorry for any inconvenience this has caused you

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