Southern Illinois Ob-Gyn Associates Data Breach Exposes Sensitive Patient Information
Southern Illinois Ob-Gyn Associates, a healthcare provider with locations in Carbondale and Herrin, detected a data breach on November 24, 2025, after an unauthorized party accessed its systems. A subsequent investigation, conducted with third-party cybersecurity experts and concluding on January 28, 2026, revealed that the intruder may have viewed or exfiltrated sensitive patient data.
The compromised information includes names, Social Security numbers, dates of birth, demographic details, health insurance numbers, and protected health information. The breach was reported to the U.S. Department of Health and Human Services, and affected individuals were notified via a sample letter submitted to the New Hampshire Attorney General’s Office.
Legal teams are now assessing whether a class action lawsuit can be filed on behalf of impacted patients, citing potential harm from privacy violations, financial losses, and time spent mitigating the breach’s effects. The incident underscores ongoing vulnerabilities in healthcare data security, particularly for organizations handling highly sensitive personal and medical records.
Source: https://www.classaction.org/data-breach-lawsuits/southern-illinois-ob-gyn-associates-may-2026
SI Ob Gyn cybersecurity rating report: https://www.rankiteo.com/company/si-ob-gyn
"id": "SI-1780612090",
"linkid": "si-ob-gyn",
"type": "Breach",
"date": "11/2025",
"severity": "85",
"impact": "4",
"explanation": "Attack with significant impact with customers data leaks"{'affected_entities': [{'industry': 'Healthcare',
'location': 'Carbondale and Herrin, Illinois, USA',
'name': 'Southern Illinois Ob-Gyn Associates',
'type': 'Healthcare Provider'}],
'customer_advisories': 'Notification to affected individuals',
'data_breach': {'data_exfiltration': 'Possible',
'personally_identifiable_information': 'Yes',
'sensitivity_of_data': 'High',
'type_of_data_compromised': ['Names',
'Social Security numbers',
'Dates of birth',
'Demographic details',
'Health insurance numbers',
'Protected health information']},
'date_detected': '2025-11-24',
'date_publicly_disclosed': '2026-01-28',
'description': 'Southern Illinois Ob-Gyn Associates detected a data breach on '
'November 24, 2025, after an unauthorized party accessed its '
'systems. The investigation revealed that sensitive patient '
'data may have been viewed or exfiltrated, including names, '
'Social Security numbers, dates of birth, demographic details, '
'health insurance numbers, and protected health information. '
'The breach was reported to the U.S. Department of Health and '
'Human Services, and affected individuals were notified.',
'impact': {'data_compromised': 'Sensitive patient information including '
'names, Social Security numbers, dates of '
'birth, demographic details, health insurance '
'numbers, and protected health information',
'identity_theft_risk': 'High',
'legal_liabilities': 'Potential class action lawsuit'},
'investigation_status': 'Concluded',
'references': [{'source': 'New Hampshire Attorney General’s Office'}],
'regulatory_compliance': {'legal_actions': 'Reported to U.S. Department of '
'Health and Human Services; '
'potential class action lawsuit',
'regulations_violated': ['HIPAA'],
'regulatory_notifications': 'Reported to U.S. '
'Department of Health '
'and Human Services and '
'New Hampshire Attorney '
'General’s Office'},
'response': {'communication_strategy': 'Notification to affected individuals '
'via sample letter submitted to the '
'New Hampshire Attorney General’s '
'Office',
'third_party_assistance': 'Third-party cybersecurity experts'},
'title': 'Southern Illinois Ob-Gyn Associates Data Breach Exposes Sensitive '
'Patient Information',
'type': 'Data Breach'}