Ontario Health atHome

A massive data breach at Ontario Health atHome compromised the data of approximately 200,000 patients. The breach, which occurred on or around March 17, was not disclosed to patients until months later, in August. The breached information potentially includes names, contact information, and medical supplies or equipment ordered. The delay in notification has raised significant concerns and criticism from government officials and the public.

Source: https://globalnews.ca/news/11270533/ontario-health-athome-data-breach-informing-months-later/

TPRM report: https://scoringcyber.rankiteo.com/company/ontario-health-athome

"id": "ont411070325",
"linkid": "ontario-health-athome",
"type": "Cyber Attack",
"date": "7/2025",
"severity": "85",
"impact": "4",
"explanation": "Attack with significant impact with customers data leaks"

{'affected_entities': [{'customers_affected': '200,000',
                        'industry': 'Healthcare',
                        'location': 'Ontario, Canada',
                        'name': 'Ontario Health atHome',
                        'type': 'Provincial Agency'}],
 'customer_advisories': 'Contacted patients',
 'data_breach': {'number_of_records_exposed': '200,000',
                 'personally_identifiable_information': 'Yes',
                 'sensitivity_of_data': 'High',
                 'type_of_data_compromised': ['name',
                                              'contact information',
                                              'medical supplies or equipment '
                                              'ordered']},
 'date_detected': '2023-03-17',
 'date_publicly_disclosed': '2023-06-09',
 'description': 'A data breach at Ontario Health atHome compromised the data '
                'of approximately 200,000 patients, including names, contact '
                'information, and medical supplies or equipment ordered. The '
                'breach was detected in March, but patients were not informed '
                'until June.',
 'impact': {'data_compromised': ['name',
                                 'contact information',
                                 'medical supplies or equipment ordered']},
 'investigation_status': 'Ongoing',
 'references': [{'source': 'Global News'}],
 'regulatory_compliance': {'regulatory_notifications': 'Informed the '
                                                       'Information and '
                                                       'Privacy Commissioner'},
 'response': {'communication_strategy': 'Informed patients after public '
                                        'disclosure'},
 'title': 'Massive Data Breach at Ontario Health atHome',
 'type': 'Data Breach'}