This nice little tutorial is based on the one at The Tech Tray.

So, basically you compress your files into a .rar archive and copy them into an innocent-looking .jpeg image. (You’ll need WinRar to make .rar’s)

The only thing that will look suspicious, is the file size which (depending on what you’re hiding) can be quite large.

Step 1: Make a new folder, in this case, C:\Hidden. Move your files into it and compress the files with WinRAR.

Step 2: Open the Command Prompt by typing cmd into the Run box from the Start Menu.

Type cd.. into the prompt and press enter. Do this again, until you’re int  the root of the Local Disk (Typically C://) directory.Type cd hidden to get to the /hidden folder you made earlier.

Now enter the following code: copy /b picture.jpg + files.rar hiddenfiles.jpg

Replace picture.jpg with the name picture you want to use (it must be in your /hidden folder), files.rar with the name of the .rar archive of your secret files and hiddenfiles.jpg with the name of the picture you want to create.

Step 3: To access the files you hid into the picture, open WinRAR and choose File -> Open Archive and navigate to your C:/hidden/ folder.

Choose All Files from the dropdown box in the bottom and look for the picture hiddenfiles.jpg (or what you named it) and open it. Now you should your files in WinRAR and you can unzip them to where you like.