Ransomware Group Chaos Claims Attack on Radia, Exposing Sensitive Data
The ransomware group Chaos has claimed responsibility for a cyberattack on Radia, a Washington-based radiology group serving over 50 hospitals and clinics across Washington and Idaho. According to reports, the group gained access to Radia’s internal network, housing sensitive data, and has already posted a sample of the exfiltrated information online.
As of the latest updates, no official confirmation has been provided by Radia regarding the breach’s scope or the nature of the compromised data. The incident is under investigation by attorneys working with ClassAction.org, who are exploring the possibility of a class action lawsuit on behalf of affected individuals including current and former patients and employees.
The potential lawsuit aims to address harm resulting from the breach, such as loss of privacy, financial costs, and time spent mitigating exposure. Legal representatives are seeking input from those who believe their data may have been compromised.
The attack underscores ongoing risks to healthcare providers, where sensitive patient and operational data remains a prime target for ransomware groups. Further details on the breach’s impact and Radia’s response are pending.
Source: https://www.classaction.org/data-breach-lawsuits/radia-july-2026
Radia Inc., P.S. cybersecurity rating report: https://www.rankiteo.com/company/radia
"id": "RAD1784327223",
"linkid": "radia",
"type": "Ransomware",
"date": "1/2026",
"severity": "100",
"impact": "4",
"explanation": "Attack with significant impact with customers data leaks"{'affected_entities': [{'customers_affected': 'Current and former patients and '
'employees',
'industry': 'Healthcare',
'location': 'Washington, Idaho',
'name': 'Radia',
'size': 'Serves over 50 hospitals and clinics',
'type': 'Radiology Group'}],
'data_breach': {'data_exfiltration': 'Yes',
'personally_identifiable_information': 'Likely',
'sensitivity_of_data': 'High',
'type_of_data_compromised': 'Sensitive data'},
'description': 'The ransomware group *Chaos* has claimed responsibility for a '
'cyberattack on Radia, a Washington-based radiology group '
'serving over 50 hospitals and clinics across Washington and '
'Idaho. The group gained access to Radia’s internal network, '
'housing sensitive data, and has posted a sample of the '
'exfiltrated information online. The incident is under '
'investigation, and a potential class action lawsuit is being '
'explored on behalf of affected individuals.',
'impact': {'data_compromised': 'Sensitive data',
'identity_theft_risk': 'High',
'legal_liabilities': 'Potential class action lawsuit',
'systems_affected': 'Internal network'},
'investigation_status': 'Ongoing',
'ransomware': {'data_exfiltration': 'Yes', 'ransomware_strain': 'Chaos'},
'references': [{'source': 'ClassAction.org'}],
'regulatory_compliance': {'legal_actions': 'Potential class action lawsuit'},
'response': {'third_party_assistance': 'Attorneys (ClassAction.org)'},
'threat_actor': 'Chaos',
'title': 'Ransomware Group Chaos Claims Attack on Radia, Exposing Sensitive '
'Data',
'type': 'Ransomware'}