A review on spatial domain technique based on image steganography

As we are moving towards a digital world with rapid strides and advancements in the field of communication of information with effective use of technology, it becomes mandatory that the communicable information is kept in an electronic format. Since the advancements in this field is a continuous process, some need gaps are also created during this, which creates a concern in terms of security of this information. In addition to cryptography, we can use steganography technique to address these issues effectively. In nutshell, we can describe steganography as security mechanisms which are used for the concealed exchange of transmittable data. It can be defined as the study of concealed information elucidation that explains how we can securely hide the existing communicable information. If we can successfully implement and achieve the principles and techniques of steganography, the communicated messages evade the attention of cyber threats like eavesdropper and attackers. By using steganography, we can hide the information into different embedding mediums which are also known as carriers. It can be anyone of these like images, audio files, video files, and text files. In the paper, we are focusing on spatial domain image based steganography. The technique is scrutinized and argued in the terms of its payload capacity i.e., the ability to hide information, how much information can be hidden, and its robustness.