Hiding and Recovering Data on Linux

neuroticia writes "linuxsecurity.com has an interesting article on data hiding and recovery: "On a 4GB Linux partition, the block size is typically 4K (chosen automatically when the mke2fs utility is run to create a filesystem). Thus one can reliably hide up to 4KB of data per file if using a small file. The data will be invulnerable to disk usage, invisible from the filesystem, and, which is more exciting for some people, undetectable by file integrity checkers using file checksumming algorithms and MAC times. Ext2 floppy (with a block size of 1KB) allows hiding data as well, albeit in smaller chunks.""

Comments

Hide data in 1.44Mb blocks

[tom_newton]

Of course! Copy the requisite illegal plans to a floppy, jam it in a bag, and bury it in your garden. Of course, if you have a dog, he might dig it up and nark on you to the feds, but that's life I suppose :)

Personally, my data is about as interesting as a box of dry Jacob's cream crackers, so I ain't about to go hiding it, either in my slack space *or* my window box!!!

Uses?

[secondsun]

Good for hiding all of my 1 - 4 kB pr0n.

Re:Uses?

[motardo]

more than enough size for asciipr0n :)

Not always the case...

[Dstrct0]

My girlfriend is actually the one with the "dirty, dirty porn collection". She was mad enough when I hid her cigarettes, I'd hate to think what would happen if I hid her porn :)