Blue Shield of California

The California Office of the Attorney General disclosed a data breach affecting Blue Shield of California between September 15, 2015, and December 17, 2015. The incident stemmed from unauthorized access via misused login credentials, compromising sensitive personal information of affected individuals. Exposed data included names, addresses, dates of birth, and Social Security numbers highly valuable details for identity theft and fraud. The breach highlighted vulnerabilities in credential management and access controls, raising concerns over the protection of customer data. While the exact number of impacted individuals was not specified in the report, the nature of the exposed information posed significant risks, including financial fraud, identity impersonation, and long-term reputational damage to the company. The incident underscored the critical need for robust cybersecurity measures, particularly in healthcare, where personal data is a prime target for cybercriminals.

Source: https://oag.ca.gov/ecrime/databreach/reports/sb24-59626

TPRM report: https://www.rankiteo.com/company/blue-shield-of-california

"id": "blu1011090725",
"linkid": "blue-shield-of-california",
"type": "Breach",
"date": "9/2015",
"severity": "85",
"impact": "4",
"explanation": "Attack with significant impact with customers data leaks"

{'affected_entities': [{'industry': 'Healthcare',
                        'location': 'California, USA',
                        'name': 'Blue Shield of California',
                        'type': 'Health Insurance Provider'}],
 'attack_vector': 'Misused/Stolen Credentials',
 'data_breach': {'data_exfiltration': 'Likely (unauthorized access)',
                 'personally_identifiable_information': ['Names',
                                                         'Addresses',
                                                         'Dates of Birth',
                                                         'Social Security '
                                                         'Numbers'],
                 'sensitivity_of_data': 'High',
                 'type_of_data_compromised': ['Personally Identifiable '
                                              'Information (PII)']},
 'date_detected': '2016-01-14',
 'date_publicly_disclosed': '2016-01-14',
 'description': 'The California Office of the Attorney General reported a data '
                'breach involving Blue Shield of California. The breach '
                'occurred between September 15, 2015, and December 17, 2015, '
                'as a result of unauthorized access involving misused log-in '
                'credentials, potentially exposing names, addresses, dates of '
                'birth, and Social Security numbers of affected individuals.',
 'impact': {'data_compromised': ['Names',
                                 'Addresses',
                                 'Dates of Birth',
                                 'Social Security Numbers'],
            'identity_theft_risk': 'High (PII exposed)'},
 'initial_access_broker': {'entry_point': 'Misused/Stolen Credentials',
                           'high_value_targets': ['PII (Personally '
                                                  'Identifiable Information)']},
 'post_incident_analysis': {'root_causes': ['Unauthorized access due to '
                                            'misused/stolen credentials']},
 'references': [{'date_accessed': '2016-01-14',
                 'source': 'California Office of the Attorney General'}],
 'regulatory_compliance': {'regulations_violated': ['Potential HIPAA (Health '
                                                    'Insurance Portability and '
                                                    'Accountability Act) '
                                                    'violations'],
                           'regulatory_notifications': ['California Office of '
                                                        'the Attorney '
                                                        'General']},
 'title': 'Blue Shield of California Data Breach (2015-2016)',
 'type': 'Data Breach'}