The California Office of the Attorney General reported on March 1, 2013, that American Express experienced a data breach involving its Cardmembers' information being recovered during a law enforcement investigation. The breach reportedly included American Express Card account numbers and names, but did not compromise Social Security numbers.
Source: https://oag.ca.gov/ecrime/databreach/reports/sb24-39033
TPRM report: https://www.rankiteo.com/company/american-express
"id": "ame519072525",
"linkid": "american-express",
"type": "Breach",
"date": "3/2013",
"severity": "50",
"impact": "2",
"explanation": "Attack limited on finance or reputation"{'affected_entities': [{'industry': 'Financial Services',
'name': 'American Express',
'type': 'Financial Services'}],
'data_breach': {'type_of_data_compromised': ['American Express Card account '
'numbers',
'names']},
'date_detected': '2013-03-01',
'date_publicly_disclosed': '2013-03-01',
'description': 'The California Office of the Attorney General reported on '
'March 1, 2013, that American Express experienced a data '
"breach involving its Cardmembers' information being recovered "
'during a law enforcement investigation. The breach reportedly '
'included American Express Card account numbers and names, but '
'did not compromise Social Security numbers.',
'impact': {'data_compromised': ['American Express Card account numbers',
'names']},
'references': [{'date_accessed': '2013-03-01',
'source': 'California Office of the Attorney General'}],
'response': {'law_enforcement_notified': True},
'title': 'American Express Data Breach',
'type': 'Data Breach'}