Lets say I have a Super Top Secret Rar File and I want to hide it from prying eyes.

Heres what I do.

For this example I have this jpg image named Manny.jpg and a archive file named KristaRanillo.rar located on my C:\test directory.














Now I click START menu on windows, then choose RUN



















On the Run dialog window I typed CMD and then click OK.












On the Dos-Prompt window I goto my Test Directory that contains my supersecret rar file by typing CD C:\TEST

Now I type here COPY /B MANNY.JPG + KRISTARANILLO.RAR MYSUPERSECRET.JPG










My Test Folder now contains 3 files, my 2 original files (manny.jpg and kristaranillo.rar) and then Mysupersecret.jpg with embedded rar file.













Windows will treat this embedded jpg file like a normal jpeg file. You can preview it or double click it and you will only see the original image.

Now if Im already all alone with my computer and I want to extract my Supersecret rar file from the embeded jpg file. All I have to do is open my Winrar and then load my embeded jpg file (mysupersecret.jpg) and extract it from there.