The California Office of the Attorney General reported that American Express Travel Related Services Company, Inc. experienced a data breach on December 19, 2012, involving unauthorized access to a merchant's website. Approximately UNKN individuals were potentially affected, with the compromised data including American Express Card account numbers and names, but not Social Security numbers.
Source: https://oag.ca.gov/ecrime/databreach/reports/sb24-40876
TPRM report: https://www.rankiteo.com/company/american-express
"id": "ame527072925",
"linkid": "american-express",
"type": "Breach",
"date": "12/2012",
"severity": "60",
"impact": "2",
"explanation": "Attack limited on finance or reputation"{'affected_entities': [{'customers_affected': 'UNKN',
'industry': 'Financial Services',
'name': 'American Express Travel Related Services '
'Company, Inc.',
'type': 'Company'}],
'attack_vector': 'Unauthorized Access',
'data_breach': {'number_of_records_exposed': 'UNKN',
'type_of_data_compromised': ['American Express Card account '
'numbers',
'Names']},
'date_detected': '2012-12-19',
'description': "Unauthorized access to a merchant's website compromised "
'American Express Card account numbers and names.',
'impact': {'data_compromised': ['American Express Card account numbers',
'Names']},
'references': [{'source': 'California Office of the Attorney General'}],
'title': 'American Express Travel Related Services Data Breach',
'type': 'Data Breach'}