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Tip #844   Hide files in an image

It is possible to hide a rar archive inside a png image file and then retrieve the files from this image. 

cat picture.png archive.rar > hidden_archive_in_pic.png

This can also be done on Windows: 

copy picture.png + archive.rar hidden_archive_in_pic.png

When you want to retrieve the hidden files, download the image, rename to .rar and extract.
 
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