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Massive Data Breaches Hit Ascension and Yale Health

5/4/2025

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Summary

Story summary

Ascension Health, a Catholic health system in Missouri, faced significant data breaches in 2025, compromising patient information across 16 states. A major ransomware attack in May 2024 exposed 5.6 million records, while breaches involving former partners added to the turmoil. In a parallel crisis, Yale New Haven Health experienced a cyberattack in March 2025, affecting over 5.5 million individuals.

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Story summary

Ascension Health, a Catholic health system in Missouri, faced significant data breaches in 2025, compromising patient information across 16 states. A major ransomware attack in May 2024 exposed 5.6 million records, while breaches involving former partners added to the turmoil. In a parallel crisis, Yale New Haven Health experienced a cyberattack in March 2025, affecting over 5.5 million individuals.