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Why did my device display a notification, "Your phone's security has blocked an action that is not permitted."

[Environment]
All Samsung devices running the Knox framework.

[Summary]
This is an prevention message from SE for Android.
 
You may have just installed a malicious app, which has attempted to install a Linux kernel module or system file. The attempt has been blocked and there is no threat to the integrity of the Linux kernel.

Restart your device to try to restore the kernel code back to normal. However, some kernel modifications made to the file system cannot be restored. Also, the original cause of the problem might still persist. Therefore, you might continue to see this error after the reboot.
 
If issues continue to persist, contact the Global Customer Support center and provide details of the error.
 
[Resolution]
N/A
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