The injection technique implants th

The injection technique implants the data to hide in
the insignificant part of the carrier file, which is normally ignored by operating systems and software applications. For
example, most computer files comprise what so called an
end-of-file marker or EOF for short, which indicates that no
more data can be read from a data source. Likewise, an
executable file usually ends with an EOF marking the end of
binary instructions. Another example is the PDF file which
ends with an EOF indicating to the reader application that no
more pages are to be fetched and that the file has ended.
Steganography by injection exploits the EOF section and
injects secret data after the EOF marker which eventually has
no side effect on the carrier file and is often disregarded by
the execution environment.