Learn how to hide files from prying eyes.
ext2hide program allows Linux users and administrators to utilize the reserved space of the ext2/3 superblocks to store hidden data on their filesystems, rendering it inaccessible to any normal viewing, yet still residing in permanent storage on disk.
Joe Barr shows us how to use this wonderful tool.
FTA "...ext2hide is a proof-of-concept program that seeks to magically hide confidential data and files where nobody will look for them. It accomplishes its magic by making use of otherwise abandoned space in the superblocks in ext2/ext3 filesystems. Even though Jason McManus, the author of the code, has been testing and using ext2hide on his own machines without catastrophic results, I urge you to use the utmost caution both in testing and using it. If you don't grok superblocks and filesystems, you probably should not experiment with ext2hide, at least until it's out of beta testing..."
Read more at Linux.com