谷歌：2024年Android安全白皮书（英文版）

When Android was being developed, the state of the art in consumer operating system security was provided by memory management systems. Both Windows and Unix workstations had protected memory features that were used to provide robust security between users of a device: multiple users could have their own logins to the device, with fully protected separation of all their apps and data, as if they were on different devices. However, within an individual user’s logged-in session, security was mo