Southern Illinois Dermatology Suffers Data Breach, Exposing Sensitive Patient Information
On November 28, 2025, Southern Illinois Dermatology a privately owned clinic based in Herrin, Illinois detected unauthorized access to its computer network. The breach potentially compromised sensitive personal data of patients, including names, addresses, dates of birth, Social Security numbers, telephone numbers, email addresses, and medical record numbers.
The incident came to light when the healthcare provider identified the intrusion, prompting an investigation into the scope of the exposure. Individuals who received a data breach notification from Southern Illinois Dermatology may face heightened risks of identity theft and fraud.
National class action law firm Edelson Lechtzin LLP has since launched an investigation into potential legal claims on behalf of affected individuals. The firm is offering free case evaluations to determine eligibility for pursuing remedies related to the breach.
Southern Illinois Dermatology has been providing medical, cosmetic, and advanced skin treatments since 1996. The full extent of the breach’s impact remains under review.
Southern Illinois Healthcare cybersecurity rating report: https://www.rankiteo.com/company/southern-illinois-healthcare
"id": "SOU1777480625",
"linkid": "southern-illinois-healthcare",
"type": "Breach",
"date": "4/2026",
"severity": "85",
"impact": "4",
"explanation": "Attack with significant impact with customers data leaks"{'affected_entities': [{'industry': 'Healthcare',
'location': 'Herrin, Illinois',
'name': 'Southern Illinois Dermatology',
'size': 'Privately owned clinic',
'type': 'Healthcare Provider'}],
'customer_advisories': 'Data breach notification sent to affected individuals',
'data_breach': {'personally_identifiable_information': 'Yes',
'sensitivity_of_data': 'High (Personally Identifiable '
'Information and medical data)',
'type_of_data_compromised': ['Names',
'Addresses',
'Dates of birth',
'Social Security numbers',
'Telephone numbers',
'Email addresses',
'Medical record numbers']},
'date_detected': '2025-11-28',
'description': 'Southern Illinois Dermatology detected unauthorized access to '
'its computer network, potentially compromising sensitive '
'personal data of patients, including names, addresses, dates '
'of birth, Social Security numbers, telephone numbers, email '
'addresses, and medical record numbers.',
'impact': {'data_compromised': 'Sensitive personal data of patients, '
'including names, addresses, dates of birth, '
'Social Security numbers, telephone numbers, '
'email addresses, and medical record numbers',
'identity_theft_risk': 'Heightened risks of identity theft and '
'fraud',
'legal_liabilities': 'Potential legal claims under investigation',
'systems_affected': 'Computer network'},
'investigation_status': 'Under review',
'references': [{'source': 'Incident description'}],
'regulatory_compliance': {'legal_actions': 'Class action investigation by '
'Edelson Lechtzin LLP'},
'response': {'communication_strategy': 'Data breach notification to affected '
'individuals',
'third_party_assistance': 'Edelson Lechtzin LLP (legal '
'investigation)'},
'title': 'Southern Illinois Dermatology Data Breach',
'type': 'Data Breach'}