The ransomware attack on Change Healthcare has resulted in the personal data of 100 million US citizens being compromised, marking the largest known breach of US healthcare records. The breached data includes contact information, health insurance details, financial data, and other sensitive personal data. The attack also disrupted healthcare services across the country, including causing prescription delays. The investigation into the incident is still ongoing.

ANZ businesses overestimate cyber readiness amid resilience gap – SecurityBrief Australia
Summarize this content to a maximum of 60 words: ANZ businesses overestimate cyber readiness amid resilience gap SecurityBrief Australia