Sam's Club's customers were receiving password reset emails and security notifications as it was targeted in credential stuffing attacks.
The attack did not involve any data breach but was a result of trying previously leaked username-password combinations to get access to the website.
TPRM report: https://scoringcyber.rankiteo.com/company/sam%27s-club
"id": "sam201110222",
"linkid": "sam%27s-club",
"type": "Cyber Attack",
"date": "10/2020",
"severity": "70",
"impact": "1",
"explanation": "Attack without any consequences"
{'affected_entities': [{'industry': 'Retail',
'name': "Sam's Club",
'type': 'Retail'}],
'attack_vector': 'Credential Stuffing',
'description': "Sam's Club's customers were receiving password reset emails "
'and security notifications as it was targeted in credential '
'stuffing attacks. The attack did not involve any data breach '
'but was a result of trying previously leaked '
'username-password combinations to get access to the website.',
'motivation': 'Unauthorized Access',
'title': "Credential Stuffing Attack on Sam's Club",
'type': 'Credential Stuffing',
'vulnerability_exploited': 'Previously leaked username-password combinations'}