The California Office of the Attorney General reported a data breach involving Massachusetts Mutual Life Insurance Company (MassMutual) on October 4, 2013. The breach occurred on September 13, 2013, and involved the potential exposure of personal information, including names, dates of birth, and Social Security numbers, due to a damaged mailing by the United States Postal Service (USPS).
Source: https://oag.ca.gov/ecrime/databreach/reports/sb24-42875
TPRM report: https://www.rankiteo.com/company/massmutual-financial-group
"id": "mas322072825",
"linkid": "massmutual-financial-group",
"type": "Breach",
"date": "9/2013",
"severity": "25",
"impact": "1",
"explanation": "Attack without any consequences"{'affected_entities': [{'industry': 'Insurance',
'location': 'Massachusetts',
'name': 'Massachusetts Mutual Life Insurance Company '
'(MassMutual)',
'type': 'Insurance Company'}],
'attack_vector': 'Physical',
'data_breach': {'personally_identifiable_information': True,
'sensitivity_of_data': 'High',
'type_of_data_compromised': ['names',
'dates of birth',
'Social Security numbers']},
'date_detected': '2013-09-13',
'date_publicly_disclosed': '2013-10-04',
'description': 'The California Office of the Attorney General reported a data '
'breach involving Massachusetts Mutual Life Insurance Company '
'(MassMutual) on October 4, 2013. The breach occurred on '
'September 13, 2013, and involved the potential exposure of '
'personal information, including names, dates of birth, and '
'Social Security numbers, due to a damaged mailing by the '
'United States Postal Service (USPS).',
'impact': {'data_compromised': ['names',
'dates of birth',
'Social Security numbers']},
'references': [{'date_accessed': '2013-10-04',
'source': 'California Office of the Attorney General'}],
'threat_actor': 'United States Postal Service (USPS)',
'title': 'MassMutual Data Breach',
'type': 'Data Breach',
'vulnerability_exploited': 'Damaged mailing'}