this post was submitted on 22 Jun 2024
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Linux
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Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).
Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word "Linux" in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.
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You're aware of file permissions, right?
So if you're concerned about a specific set of files that you don't want moved, AND they're in a normal userspace location...
The thing with file permissions is that I or root are able to change that. I am looking for a method (if it exists) that somehow bypasses that.
Yeah, but you'd need to sudo in order to affect the files. So that's a simpler way of doing what you're suggesting.
I'll straight up pose the question I asked someone else:
It seems I wasn't clear as most people misunderstood me.
But, to give a very precise example; say
~/some/folder.chattr,chmodorchownor similar utilities that remove access as long as one doesn't have elevated privileges.Then, what prevents whosoever, to copy that file through cloning the complete disk?
Even if they're not able to get past the password, it will be found on the cloned disk. SO, basically, I ask for some method that prevents the file to even be copied through a disk clone. I don't care that it has three passwords protecting it. What I want is for the disk clone (or whatever sophisticated copy/mv/cut or whatsoever utility exists) to somehow fail while trying to attempt the action on the protected files.
Nothing can stop anyone anywhere from cloning a storage device. You can encrypt it however many times you want, but it can still be read at the block level.
I'm not sure where the paranoia lands or is focused towards, but there is no storage device that exists that can't be copied, so if that's your hangup, you should just accept that and move on. If someone has physical access to your drives, then can copy it, but whether they can decrypt it is up for debate.
As the saying goes: given enough time and effort, anything can be brute-forced.
Clear. Thank you!