CLI Magic: ext2hide veils sensitive files (Linux.com)
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."
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