It is 3 a.m. in a busy hospital. A junior staff member opens a patient file on a shared system. The file decrypts instantly. No second check. No role check. Later, that access raises alarms. This is where control file decryption decides if patient trust stays intact or quietly slips away. https://www.whizolosophy.com/category/other-beneficial-approaches/article-column/controlled-file-decryption-in-hospitals-safeguarding-patient-records-against-unauthorized-access