the use of internet increases the chances for
attackers to detect the information content during the
transmission process between two parties. Steganography is a
solution to pass messages between two parties in a secure
manner. This work proposes a secure method to hide one or more
images simultaneously inside cover image with the same size.
This method used genetic algorithm technique to generate secret
key and to select optimum mixing matrix values. This key will be
shared between only the message sender and receiver to ensure
that the data sources are kept secure and hard to be detected by
untrusted third parties. The results show that the proposed
method improves the capability of hiding more than one image
process inside the cover image. Also, the proposed method
increases the effectiveness of the hiding capacity, security level
and robustness to certain attack