>> This must be stopped:
>>
>> ln /etc/passwd ~/passwd
>> chown user.group ~/passwd
>
> doesn't work:
Yes, because Linux prevents operation 2.
It would be more logical (but less traditional)
to prevent operation 1 instead.
For now, I'd prefer to prevent both operations.
It is unsafe to allow operation 2 without getting
rid of old kernels and evil links.
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