Google scans the applications installed on the device through the Google PlayProtect protection mechanism and actively disables or even automatically uninstalls the application when a malicious application is detected (for example, it has been disabled overnight). This protection mechanism will also perform automated scanning when users download and install applications. If malicious behavior is found, the application will be blocked from being installed, which is sometimes inconvenient for users to sideload.
From a security perspective, Google should not allow users to install applications that have been detected as malicious, but after all, the phone belongs to the user, and the control should be in the user's hands, so now Google has come up with a more compromise solution.
This compromise is somewhat similar to the approach of some desktop security software: users can temporarily disable Google Play Protect to install various applications—whether harmful or not.
Google Play Protect will automatically restart the next day instead of being permanently disabled. Then the protection mechanism can continue to rescan the user's installed applications and pop up reminders when malicious applications are found.
Therefore, this new improvement may be very good for some users, especially those who frequently download and install various applications. However, it should be noted that installing applications from unknown sources may cause phone poisoning and affect security.
This improvement is expected to be launched at some time in the future, and will be automatically updated through Google Play. Users who have installed Google Play and related components will receive subsequent reminders.