On September 23, 2013, the California Office of the Attorney General reported a data breach involving American Express Travel Related Services Company, Inc. (referred to as AXP). The incident involved the recovery of American Express Card account information, including card numbers and expiration dates; however, Social Security numbers were not affected. The breach date is not available.
Source: https://oag.ca.gov/ecrime/databreach/reports/sb24-42745
TPRM report: https://www.rankiteo.com/company/american-express
"id": "ame617072725",
"linkid": "american-express",
"type": "Breach",
"date": "9/2013",
"severity": "50",
"impact": "2",
"explanation": "Attack limited on finance or reputation"{'affected_entities': [{'industry': 'Financial Services',
'name': 'American Express Travel Related Services '
'Company, Inc.',
'type': 'Company'}],
'data_breach': {'sensitivity_of_data': 'High',
'type_of_data_compromised': ['card numbers',
'expiration dates']},
'date_publicly_disclosed': '2013-09-23',
'description': 'The incident involved the recovery of American Express Card '
'account information, including card numbers and expiration '
'dates; however, Social Security numbers were not affected.',
'impact': {'data_compromised': ['card numbers', 'expiration dates'],
'payment_information_risk': True},
'references': [{'date_accessed': '2013-09-23',
'source': 'California Office of the Attorney General'}],
'title': 'American Express Data Breach',
'type': 'Data Breach'}