Marsh McLennan

The Washington State Office of the Attorney General reported that Marsh McLennan experienced a cyberattack involving unauthorized access to personal information on April 22, 2021, which was discovered on April 26, 2021. The breach potentially affected 2,550 Washington residents, with compromised information including names, Social Security numbers, driver's license numbers, and health insurance information. Notifications to affected individuals began on June 30, 2021.

Source: https://www.atg.wa.gov/data-breach-notifications | https://data.wa.gov/resource/sb4j-ca4h.json?id=10492

TPRM report: https://www.rankiteo.com/company/marshmclennan

"id": "mar919072625",
"linkid": "marshmclennan",
"type": "Breach",
"date": "4/2021",
"severity": "85",
"impact": "4",
"explanation": "Attack with significant impact with customers data leaks"

{'affected_entities': [{'customers_affected': 2550,
                        'industry': 'Insurance',
                        'name': 'Marsh McLennan',
                        'type': 'Company'}],
 'attack_vector': 'Unauthorized Access',
 'data_breach': {'number_of_records_exposed': 2550,
                 'personally_identifiable_information': True,
                 'sensitivity_of_data': 'High',
                 'type_of_data_compromised': ['names',
                                              'Social Security numbers',
                                              "driver's license numbers",
                                              'health insurance information']},
 'date_detected': '2021-04-26',
 'date_publicly_disclosed': '2021-06-30',
 'description': 'Unauthorized access to personal information including names, '
                "Social Security numbers, driver's license numbers, and health "
                'insurance information.',
 'impact': {'data_compromised': ['names',
                                 'Social Security numbers',
                                 "driver's license numbers",
                                 'health insurance information']},
 'references': [{'source': 'Washington State Office of the Attorney General'}],
 'title': 'Marsh McLennan Data Breach',
 'type': 'Data Breach'}