Ascension

A Black Basta ransomware attack on Ascension Health, one of the largest US Catholic healthcare systems, forced hospitals to divert emergency patients, delay surgeries, and revert to paper records, affecting 5.6 million patients.

Healthcare ransomware attacks affected 93% of organizations in 2024-2025, with Ascension's $1.8B loss and 5.6M affected patients illustrating the sector's vulnerability. HIPAA Security Rule update pending.