Concord Eye Center Investigates Cyberattack Linked to Hacker Group Interlock
Concord Eye Center, a New Hampshire-based ophthalmology practice, is responding to a cybersecurity incident that may have exposed sensitive patient and employee data. The organization detected the breach after identifying unauthorized access to a portion of its network, prompting an ongoing forensic investigation with external experts. The assessment, which could take weeks to complete, aims to determine the full scope of the impact.
On October 12, 2026, the ransomware monitoring site Ransomware.live reported that the hacker group Interlock claimed responsibility for the attack, alleging the theft of 290 gigabytes of data. According to the group, compromised information may include names, addresses, Social Security numbers, medical histories, diagnostic results, insurance details, and financial records. Another cybersecurity platform, Breachsense, corroborated the claim, attributing the breach to Interlock.
As of the latest update, Concord Eye Center has not confirmed the extent of the data exposure or the timeline of the incident. Legal teams are now exploring the possibility of a class action lawsuit on behalf of affected patients and staff, citing potential risks to privacy and financial security. The investigation remains active, with no further details released about mitigation efforts or long-term security improvements.
Source: https://www.classaction.org/data-breach-lawsuits/concord-eye-center-october-2026
Concord Eye Center TPRM report: https://www.rankiteo.com/company/concord-eye-care-center-o.d.-p.a.
"id": "con1791931774",
"linkid": "concord-eye-care-center-o.d.-p.a.",
"type": "Ransomware",
"date": "10/2026",
"severity": "100",
"impact": "4",
"explanation": "Attack with significant impact with customers data leaks"{'affected_entities': [{'industry': 'Ophthalmology',
'location': 'New Hampshire, USA',
'name': 'Concord Eye Center',
'type': 'Healthcare Provider'}],
'data_breach': {'data_exfiltration': 'Alleged 290 GB',
'personally_identifiable_information': 'Yes',
'sensitivity_of_data': 'High',
'type_of_data_compromised': ['Names',
'Addresses',
'Social Security numbers',
'Medical histories',
'Diagnostic results',
'Insurance details',
'Financial records']},
'date_publicly_disclosed': '2026-10-12',
'description': 'Concord Eye Center, a New Hampshire-based ophthalmology '
'practice, is responding to a cybersecurity incident that may '
'have exposed sensitive patient and employee data. The '
'organization detected unauthorized access to a portion of its '
'network, prompting an ongoing forensic investigation with '
'external experts. The hacker group Interlock claimed '
'responsibility for the attack, alleging the theft of 290 '
'gigabytes of data, including names, addresses, Social '
'Security numbers, medical histories, diagnostic results, '
'insurance details, and financial records.',
'impact': {'data_compromised': '290 GB',
'identity_theft_risk': 'High',
'legal_liabilities': 'Potential class action lawsuit',
'payment_information_risk': 'High'},
'investigation_status': 'Ongoing',
'ransomware': {'data_exfiltration': 'Alleged 290 GB'},
'references': [{'date_accessed': '2026-10-12', 'source': 'Ransomware.live'},
{'date_accessed': '2026-10-12', 'source': 'Breachsense'}],
'regulatory_compliance': {'legal_actions': 'Potential class action lawsuit'},
'response': {'third_party_assistance': 'External forensic experts'},
'threat_actor': 'Interlock',
'title': 'Concord Eye Center Cyberattack Linked to Hacker Group Interlock',
'type': 'Ransomware'}