T-Mobile hacking: Google Fi customers also hit by data breach – Times of India

Earlier this month, T-Mobile said that hackers have stolen data of 37 million customers. Google has now confirmed that its cell network provider Google Fi also suffered a data breach, which is likely related to telecom giant’s security breach.
As per media reports, Google sent out an email to Fi subscribers, informing them about the breach. Notably, the technology giant did not name T-Mobile in the email but it is reported that Google Fi relies primarily on T-Mobile’s 5G network and US Cellular.

Google also highlights that only a limited amount of Google Fi subscribers data, that was used to provide customer support, has been compromised. The accessed information included phone numbers and limited technical information, including when customers’ account was activated, SIM card serial number, account status, and limited details about the mobile service plan among others.
Here’s Google’s email to Fi customers:
Dear Google Fi customer,
We’re writing to let you know that the primary network provider for Google Fi recently informed us there has been suspicious activity relating to a third party system that contains a limited amount of Google Fi customer data.
There is no action required by you at this time.
This system is used for Google Fi customer support purposes and contains limited data including when your account was activated, data about your mobile service plan, SIM card serial number, and active or inactive account status.
It does not contain your name, date of birth, email address, payment card information, social security number or tax IDs, driver’s license or other form of government ID, or financial account information, passwords or PINs that you may use for Google Fi, or the contents of any SMS messages or calls.
Our incident response team undertook an investigation and determined that unauthorized access occurred and have worked with our primary network provider to identify and implement measures to secure the data on that third party system and notify everyone potentially impacted. There was no access to Google’s systems or any systems overseen by Google.
If you are an active Fi user, please note that your Google Fi service continues to work as usual and was not interrupted by this issue.
What does this mean for me?
The accessed information included your phone number and limited technical information. This includes information about when your account was activated, SIM card serial number, account status (for example, whether your plan is active or inactive), and limited details about the mobile service plan and options provided by your Google Fi service (such as unlimited SMS or international roaming).

T-Mobile data breach
T-Mobile also claimed that there was no evidence that its systems or network had been compromised. “We understand that an incident like this has an impact on our customers and regret that this occurred. Our investigation is still ongoing, but the malicious activity appears to be fully contained at this time,” T-Mobile said in a statement.