California Physicians' Services d/b/a Blue Shield of California

The California Office of the Attorney General reported a data breach involving Blue Shield of California on November 6, 2020. The breach occurred between October 16 and October 20, 2020, due to an error in updating Medicare Advantage HMO provider directories, potentially exposing individuals' Tax Identification Numbers. The number of affected individuals is currently unknown.

Source: https://oag.ca.gov/ecrime/databreach/reports/sb24-195911

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

"id": "blu528072525",
"linkid": "blue-shield-of-california",
"type": "Breach",
"date": "10/2020",
"severity": "50",
"impact": "2",
"explanation": "Attack limited on finance or reputation"

{'affected_entities': [{'industry': 'Healthcare',
                        'location': 'California',
                        'name': 'Blue Shield of California',
                        'type': 'Health Insurance Provider'}],
 'attack_vector': 'Error in updating Medicare Advantage HMO provider '
                  'directories',
 'data_breach': {'personally_identifiable_information': 'Tax Identification '
                                                        'Numbers',
                 'sensitivity_of_data': 'High',
                 'type_of_data_compromised': 'Tax Identification Numbers'},
 'date_detected': '2020-11-06',
 'date_publicly_disclosed': '2020-11-06',
 'description': 'The California Office of the Attorney General reported a data '
                'breach involving Blue Shield of California on November 6, '
                '2020. The breach occurred between October 16 and October 20, '
                '2020, due to an error in updating Medicare Advantage HMO '
                "provider directories, potentially exposing individuals' Tax "
                'Identification Numbers. The number of affected individuals is '
                'currently unknown.',
 'impact': {'data_compromised': ['Tax Identification Numbers']},
 'references': [{'date_accessed': '2020-11-06',
                 'source': 'California Office of the Attorney General'}],
 'title': 'Blue Shield of California Data Breach',
 'type': 'Data Breach'}