Madera Community Hospital Suffers Major Data Breach Affecting Over 150,000 Individuals
Madera Community Hospital in California disclosed a significant data breach that exposed the personal and medical information of 150,810 individuals. The incident occurred on May 26, 2025, when an unauthorized third party accessed the hospital’s network for two days. Hospital officials detected suspicious activity on May 29, 2025, and immediately engaged a cybersecurity firm to investigate.
The breach was reported to the U.S. Department of Health and Human Services (HHS) on July 13, 2026, and classified as a "hacking/IT incident." Compromised data includes names, birthdates, contact details, Social Security numbers, financial account information, limited medical records (such as treatment and insurance details), and biometric data.
While the hospital confirmed that files were exfiltrated, officials noted that the threat actors withdrew their extortion demand after learning the target was a healthcare provider, citing concerns over patient harm. The incident underscores the growing risks of cyberattacks on critical healthcare infrastructure.
Madera Community Hospital TPRM report: https://www.rankiteo.com/company/madera-community-hospital
"id": "mad1785925662",
"linkid": "madera-community-hospital",
"type": "Breach",
"date": "8/2026",
"severity": "100",
"impact": "4",
"explanation": "Attack with significant impact with customers data leaks"{'affected_entities': [{'customers_affected': '150,810',
'industry': 'Healthcare',
'location': 'California, USA',
'name': 'Madera Community Hospital',
'type': 'Healthcare Provider'}],
'attack_vector': 'Unauthorized network access',
'data_breach': {'data_exfiltration': 'Yes',
'number_of_records_exposed': '150,810',
'personally_identifiable_information': ['Names',
'Birthdates',
'Social Security '
'numbers',
'Contact details'],
'sensitivity_of_data': 'High (includes Social Security '
'numbers and medical records)',
'type_of_data_compromised': ['Personal information',
'Medical records',
'Financial account information',
'Biometric data']},
'date_detected': '2025-05-29',
'date_publicly_disclosed': '2026-07-13',
'description': 'Madera Community Hospital in California disclosed a '
'significant data breach that exposed the personal and medical '
'information of 150,810 individuals. The incident occurred '
'when an unauthorized third party accessed the hospital’s '
'network for two days. The breach was reported to the U.S. '
'Department of Health and Human Services (HHS) and classified '
"as a 'hacking/IT incident.' Compromised data includes names, "
'birthdates, contact details, Social Security numbers, '
'financial account information, limited medical records, and '
'biometric data. The threat actors withdrew their extortion '
'demand after learning the target was a healthcare provider.',
'impact': {'brand_reputation_impact': 'Potential negative impact due to data '
'breach',
'data_compromised': 'Personal and medical information of 150,810 '
'individuals',
'identity_theft_risk': 'High (Social Security numbers and '
'financial account information exposed)',
'payment_information_risk': 'High (financial account information '
'exposed)',
'systems_affected': 'Hospital network'},
'investigation_status': 'Ongoing',
'motivation': 'Extortion (withdrawn)',
'ransomware': {'data_exfiltration': 'Yes',
'ransom_demanded': 'Yes (withdrawn)',
'ransom_paid': 'No'},
'references': [{'source': 'U.S. Department of Health and Human Services '
'(HHS)'}],
'regulatory_compliance': {'regulations_violated': ['HIPAA'],
'regulatory_notifications': 'Reported to U.S. '
'Department of Health '
'and Human Services '
'(HHS)'},
'response': {'incident_response_plan_activated': 'Yes',
'third_party_assistance': 'Cybersecurity firm engaged'},
'threat_actor': 'Unauthorized third party',
'title': 'Madera Community Hospital Suffers Major Data Breach Affecting Over '
'150,000 Individuals',
'type': 'Data Breach'}