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URL: https://go.business.t-mobile.com/webmail/27512/979906106/87d21aa69de3366691357ddbdcc18e327660ef8e1914f3c56bb64910234d6031
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Dear Cristian Arenas,

We are writing to the primary contact we have on record to communicate important
information relevant to your business relationship with T‑Mobile. 

You may have seen in the news recently that there was a cyberattack against
T-Mobile. Our analysis indicates that unauthorized access to some of your
business or personal data may have occurred. 

We are reaching out to you, as the primary account holder on the account, with
the latest information we have on this event. 

What Happened
Approximately ten days ago, we learned of claims made in an online forum that a
bad actor had compromised T‑Mobile systems. We immediately began an exhaustive
investigation into these claims and brought in a world-leading cybersecurity
expert to help with our assessment. We then located and immediately closed the
access point that we believe was used to illegally gain entry to our servers.

On August 17, 2021, we were able to verify that a subset of T-Mobile data had
been accessed by unauthorized individuals. We also began coordination with law
enforcement as our forensic investigation continued.  Our investigation remains
ongoing.

What Information Was Involved
The exact information accessed varies by business and individual. We have
determined that the types of impacted business information for your business
include: business name, federal tax ID, business address, contact name, and
business phone number. Some personal information, likely provided when your
business applied for credit with T-Mobile, may have also been impacted. This may
include names, driver’s license numbers, government IDs, Social Security
numbers, dates of birth, addresses, and phone numbers. We have also determined
that IMEI and IMSI numbers may have also been accessed. IMPORTANTLY, we have NO
information that indicates, business or personal financial information, payment
information, credit or debit card information, account numbers, or account PIN
and passwords were accessed.

What We Are Doing
Based on our current knowledge of data accessed, we do not believe the data
stolen can be used for unauthorized access to your T-Mobile business account. To
help protect you from identify theft, T-Mobile is offering all impacted
customers McAfee ID Protection for 2 years, free.

Additionally, our T-Mobile for Business Team of Experts stands at the ready to
assist you with any precautionary account changes you may wish to make. Again,
we do not believe the data stolen can be used for unauthorized account access.
Call 611 or 1‑877‑347‑2127 to reach your T-Mobile for Business Team of Experts.
You can also click here to learn what additional precautionary measures you can
take to protect your account.

Additional Actions You Can Take
We do not believe the data stolen can be used for unauthorized account access.
However, the following steps are good precautionary measures the primary account
holder(s) assigned to your T-Mobile account(s) may wish to take to add extra
security features:
 * Change your billing account PIN.
   * Call T-Mobile for Business Team of Experts at 611 or 1‑877‑347‑2127.
 * Change your online password used to access your T-Mobile account.
   * Log into your T-Mobile portal and follow the steps to create your new
     password.
 * Protect your account from unauthorized ports.
   * All Business and Government accounts are protected from unauthorized ports
     automatically by requiring your account PIN to authorize. However, if you’d
     like to provide additional security to prevent unauthorized porting of your
     T-Mobile numbers, you may call your T-Mobile for Business Team of Experts
     at 611 or 1‑877‑347‑2127 to add an additional deterrent to the account.

It is always a good idea to remain vigilant against threats of identity theft or
fraud, and to regularly review and monitor your account statements and credit
history for any signs of unauthorized transactions or activity. Also, it is
always a good idea to be alert for “phishing” emails by someone who acts like
they know you or are a company that you may do business with and requests
sensitive information over email, such as passwords, Social Security numbers, or
bank account information. We do not ask for this type of information over email.

Other Important Information
If you have additional questions, please contact your T‑Mobile for Business
Account Executive or T-Mobile for Business Team of Experts at 611 or
1‑877‑347‑2127. Please also visit
https://go.business.t-mobile.com/e/27512/2021-08-24/n8lqj9/979906106?h=EdUgtSY_afabrg4yzZFd_2FbDcgN72xrUcTrUaJrOS8
to see more ways to protect yourself.

We are sorry this incident occurred. We take the security of customer
information seriously and while we have a number of safeguards in place to
protect customer information from unauthorized access, we are also always
working to further enhance security so we can stay ahead of this type of
activity.

Sincerely,

Mike Katz
Executive VP, T-Mobile Business Group

   

This email was sent to: cristian.arenas@latam.com.

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