T-Mobile

The account information of an undisclosed number of customers of T-mobiles was breached by an unauthorized third-party.

The accessed data included name and billing address, phone number, account number, rate plan and features, such as whether you added an international calling feature all related to prepaid service account.

T-mobile alerted all impacted customers via SMS notifications and shut down malicious, unauthorized access to some information related to your T-Mobile prepaid wireless account.

Source: https://www.bleepingcomputer.com/news/security/t-mobile-discloses-data-breach-impacting-prepaid-customers/

TPRM report: https://scoringcyber.rankiteo.com/company/t-mobile

"id": "tmo0241722",
"linkid": "t-mobile",
"type": "Breach",
"date": "11/2019",
"severity": "80",
"impact": "4",
"explanation": "Attack with significant impact with customers data leaks"

{'affected_entities': [{'industry': 'Telecommunications',
                        'name': 'T-Mobile',
                        'type': 'Telecommunications Company'}],
 'attack_vector': 'Unauthorized Access',
 'customer_advisories': 'Alerted impacted customers via SMS notifications',
 'data_breach': {'personally_identifiable_information': ['Name',
                                                         'Billing Address',
                                                         'Phone Number'],
                 'type_of_data_compromised': ['Personally Identifiable '
                                              'Information',
                                              'Account Information']},
 'description': 'The account information of an undisclosed number of customers '
                'of T-Mobile was breached by an unauthorized third-party. The '
                'accessed data included name and billing address, phone '
                'number, account number, rate plan and features, such as '
                'whether you added an international calling feature all '
                'related to prepaid service account. T-Mobile alerted all '
                'impacted customers via SMS notifications and shut down '
                'malicious, unauthorized access to some information related to '
                'your T-Mobile prepaid wireless account.',
 'impact': {'data_compromised': ['Name',
                                 'Billing Address',
                                 'Phone Number',
                                 'Account Number',
                                 'Rate Plan and Features']},
 'response': {'communication_strategy': 'Alerted impacted customers via SMS '
                                        'notifications',
              'containment_measures': 'Shut down malicious, unauthorized '
                                      'access'},
 'threat_actor': 'Unauthorized Third-Party',
 'title': 'T-Mobile Prepaid Account Data Breach',
 'type': 'Data Breach'}