"secure" file flag?

[Rayson Ho]

I am wondering if it is useful to have a "secure" file flag??

The secure file flag will be set for files that contain sensitive data.
Then the OS will take special care when operating on those "secure"
files.

e.g. when deleting a "secure" file, the OS will overwrite the file with
random data.

One advantage would be to have "secure" files in the same filesystem as
other normal files.

Any one knows if FreeBSD has already implemented this??

Thanks,
Rayson


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