The California Office of the Attorney General reported that Massachusetts Mutual Life Insurance Company experienced a data breach on July 13, 2012. The breach involved the inadvertent exposure of customer names, Social Security numbers, and 401(k) balance information. This incident was reported on July 31, 2012.
Source: https://oag.ca.gov/ecrime/databreach/reports/sb24-32379
TPRM report: https://www.rankiteo.com/company/massmutual-financial-group
"id": "mas542072925",
"linkid": "massmutual-financial-group",
"type": "Breach",
"date": "7/2012",
"severity": "85",
"impact": "4",
"explanation": "Attack with significant impact with customers data leaks"{'affected_entities': [{'industry': 'Financial Services',
'location': 'Massachusetts',
'name': 'Massachusetts Mutual Life Insurance Company',
'type': 'Insurance Company'}],
'data_breach': {'personally_identifiable_information': True,
'sensitivity_of_data': 'High',
'type_of_data_compromised': ['customer names',
'Social Security numbers',
'401(k) balance information']},
'date_detected': '2012-07-13',
'date_publicly_disclosed': '2012-07-31',
'description': 'The California Office of the Attorney General reported that '
'Massachusetts Mutual Life Insurance Company experienced a '
'data breach on July 13, 2012, involving the inadvertent '
'exposure of customer names, Social Security numbers, and '
'401(k) balance information. The breach was reported on July '
'31, 2012.',
'impact': {'data_compromised': ['customer names',
'Social Security numbers',
'401(k) balance information']},
'references': [{'date_accessed': '2012-07-31',
'source': 'California Office of the Attorney General'}],
'title': 'Massachusetts Mutual Life Insurance Company Data Breach',
'type': 'Data Breach'}