Steganography Basic Knowledge Part-1

What is Steganography?

Steganography is the practice of conealng a file,massage,image or video within another file,massage,image or video. The word steganography combines the Greek words steganos, meaning "covered concealed, or protected", and graphein meaning "writting".

Why Steganography is necessary?

Many in intelligient Department like FBI, Under coverd Police.They are not confined to there country the also works in another Country.At there work they need to share some secret information .So they always try to maintain the  Privacy so that the Information don't get leak. So they Use Steganography for Privacy.

Through this, if there information get leaks no one could decode there information and there information would be safe and secure.

History of Steganogaphy!

http://csis.pace.edu/~ctappert/srd2005/d1.pdf

You can read this book.

Practical>

In your PC opne any folder then open cmd there by writing cmd in the path

now make add a a zip or rar file and a image.

now first method hiding a massage in picture.

Second Method

Hidding zip or rar in picture

Make Sure that your new image file should be the image extention