In recent years, there have been many cases of hospitals leaking patients' private information. Here are some of the more well-known cases, and an overview of the responsible parties: 1. **Data leakage incident in a US hospital:** Some US hospitals have had their patients' medical records leaked due to cyber attacks or negligence of internal staff. For example, a large medical group had its network system hacked, resulting in the theft of tens of thousands of patients' personal health information. The responsible parties usually include the hospital's IT security team and management who failed to properly protect the data. 2. **National Health Service (NHS) incident in the UK:** The NHS has been criticized in many cases for improper use and sharing of patient information by internal staff. Some medical staff have been disciplined for unauthorized access to patient records. These responsible parties are usually medical staff who directly contact or manage patient information. 3. **Information leakage incident in a Chinese hospital:** In China, some hospitals have attracted social attention due to employees' private disclosure of patient information. These incidents usually involve hospital managers or relevant medical staff who failed to follow relevant privacy protection policies. 4. **Electronic Health Record (EHR) System Vulnerabilities:** Many hospitals rely on electronic health record systems, which sometimes lead to patient information leaks due to improper security settings or software vulnerabilities. The relevant responsible parties can be the hospital's IT department or the software company responsible for system maintenance. These incidents not only affect the privacy rights of patients, but also damage the reputation of the hospital. The relevant responsible parties generally face internal investigations, legal liabilities or professional penalties. The laws and regulations on medical information protection in various countries and regions are also constantly strengthening to reduce the occurrence of such incidents.