Hyatt Hotels chain across the was infected by a malware attack back in January 2016.
The attackers designed the malware to exfiltrated payment card information including cardholder names, card numbers, expiration dates, and internal verification code affected payment processing systems.
The hotel chain offered one year’s free protection to those affected by the breach,
Source: https://blog.itgovernanceusa.com/blog/hyatt-names-hotels-affected-by-payment-information-malware
TPRM report: https://scoringcyber.rankiteo.com/company/hyatt
"id": "hya1348522",
"linkid": "hyatt",
"type": "Ransomware",
"date": "01/2016",
"severity": "90",
"impact": "5",
"explanation": "Attack threatening the organization's existence"{'affected_entities': [{'industry': 'Hospitality',
'name': 'Hyatt Hotels',
'type': 'Hotel Chain'}],
'attack_vector': 'Malware',
'customer_advisories': 'The hotel chain offered one year’s free protection to '
'those affected by the breach',
'data_breach': {'data_exfiltration': True,
'personally_identifiable_information': True,
'sensitivity_of_data': 'High',
'type_of_data_compromised': ['Payment Card Information']},
'date_detected': '2016-01-01',
'description': 'Hyatt Hotels chain across the was infected by a malware '
'attack back in January 2016. The attackers designed the '
'malware to exfiltrated payment card information including '
'cardholder names, card numbers, expiration dates, and '
'internal verification code affected payment processing '
'systems.',
'impact': {'data_compromised': ['Cardholder Names',
'Card Numbers',
'Expiration Dates',
'Internal Verification Code'],
'payment_information_risk': True,
'systems_affected': ['Payment Processing Systems']},
'motivation': 'Financial Gain',
'title': 'Hyatt Hotels Malware Attack',
'type': 'Malware Attack'}