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Ascension cybersecurity incidents and threat signals
ascension.org
This company page brings together public reporting currently associated with Ascension. It reflects signals published by Shadow Tier and should not be read as a complete incident history.
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Based on all published signals currently linked to Ascension. Affected countries come from victim data; the company country above remains a separate profile fact. Counts describe this reporting set, not overall incident prevalence.
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Ascension Health Discloses Data Breach Affecting Over 5.5 Million Individuals
Ascension, one of the largest U.S. hospital operators, disclosed a data breach affecting 5,599,699 patients and employees. The disclosure and notification process began around December 22, 2024. The incident, a ransomware attack from May 2024, compromised various types of sensitive information.
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Questions about Ascension cybersecurity reporting
What does the Ascension page include?
It combines a reviewed organization profile with all current published Shadow Tier signals explicitly linked to Ascension.
Does every mention of Ascension appear here?
No. A signal must contain a reliable company connection and meet the publication criteria; incidental or ambiguous mentions are excluded.
Why can the incident count change?
The page follows current published reporting. Counts change as new evidence is added, classifications are reviewed, or older signals leave the reporting window.