Aesto LLC operating as Aesto Health hit by network compromise
Incident
Summary
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Aesto Health disclosed a breach of a limited portion of its Amazon Web Services infrastructure, exposing protected health information tied to 9,540,683 people. The intrusion occurred in December 2025 and was later confirmed on May 26, 2026 after forensic review. The compromised records included names, dates of birth, medical information, financial account numbers, government IDs, and Social Security numbers. The event also created downstream privacy risk for 29 healthcare providers that relied on the service.
Related Happenings
Aesto Health patient data breach
Data Leak
H score73
First: 01.09.2026 22:28
Last: 01.09.2026 22:28
Sources 1
How related:
After an extensive forensic investigation and manual document review, on May 26, 2026, we confirmed that between on or about December 2, 2025, and December 18, 2025, certain protected health information belonging to patients of various Covered Entity clients stored within Aesto’s network may have been accessed and/or acquired by an unauthorized actor
About this happening:
Aesto Health disclosed a data breach affecting 9,540,683 individuals, creating a major identity-theft and medical-fraud risk from exposed patient records. The intrusion re...
Aesto Health patient data breach
Data LeakHow related: After an extensive forensic investigation and manual document review, on May 26, 2026, we confirmed that between on or about December 2, 2025, and December 18, 2025, certain protected health information belonging to patients of various Covered Entity clients stored within Aesto’s network may have been accessed and/or acquired by an unauthorized actor
About this happening: Aesto Health disclosed a data breach affecting 9,540,683 individuals, creating a major identity-theft and medical-fraud risk from exposed patient records. The intrusion re...
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Data Leak
H score67
First: 27.07.2026 07:51
Last: 27.07.2026 07:51
Sources 1
About this happening:
A PEAR ransomware group leak made allegedly stolen MCBS files available for download, exposing personal, financial, HR, patient, payment, and email data. The leak is t...
MCBS data leak claimed by PEAR ransomware group
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Data Leak
H score65
First: 18.05.2026 15:58
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Sources 1
About this happening:
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Erie Family Health Centers data leak exposing credentials and medical data
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New York City Health and Hospitals Corporation hit by cyberattack
Incident
H score59
First: 18.05.2026 15:58
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Sources 1
About this happening:
The New York City Health and Hospitals Corporation disclosed a data breach that exposed sensitive records and affected 1.8 million individuals. Investigators found t...
New York City Health and Hospitals Corporation hit by cyberattack
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Cookeville Regional Medical Center patient records leak
Data Leak
H score56
First: 16.04.2026 18:01
Last: 16.04.2026 18:01
Sources 1
About this happening:
Cookeville Regional Medical Center disclosed a data leak affecting 337,917 patients, exposing personal and medical records and raising identity-theft risk. Files were...
Cookeville Regional Medical Center patient records leak
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Timeline
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01.09.2026 22:28 2 articles · 1h ago
Aesto LLC operating as Aesto Health hit by network compromise
Initial DisclosureAttackers gained access to a limited portion of Aesto Health’s AWS infrastructure in December 2025. The compromise opened a path to patient data stored within the company network and was later confirmed through forensic review.
Show sources
- Aesto Health says data breach affects over 9.5 million patients — www.bleepingcomputer.com — 01.09.2026 22:28
- Aesto Health says data breach affects over 9.5 million patients — www.bleepingcomputer.com — 01.09.2026 22:28