![]() ![]() So, for example, if you were to hide a pdf file in a jpg, this would be useless against someone searching for pdf headers. Most forensic applications search raw data for file headers and analyze file sizes - among other things. While it may add a layer of protection keeping files on you computer safe from non-technical users, it provides zero security against anyone else. Steganography is a poor way to keep things safe. To be safer, you need to clear your history so that no one can see the command you typed to open the image (which reveals its location) history -c & rm -f ~/.bash_historyĪlso, when the image is unmounted, make sure to delete its link on the left pane of Disk Utility. You will be prompted for your password, and then you can use the disk image just like usual in the Finder. ![]() Using Terminal, you can then rename the file using (assuming the image was saved in your documents folder) mv ~/Documents/myImage.dmg ~/Documents/.myImageĮvery time you need to access your image, you can do, from Terminal, open ~/Documents/.myImage Give it a name and a storing location, and there you go. Then you can choose the size (select it large enough to fit your needs) and the encryption (128- or 256-bit AES). For this, click File > New > Blank Disk Image. The best option is to use a disk image, which can be used as a directory in the Finder, for easy access (when mounted).Ĭreate a DMG image using "Disk Utility" (it's in /Applications/Utilities/, or use Spotlight). Your best option, as you said, is to do both, i.e.
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