Information security is one of the high level issues that have been tended to for a decade and intensively centered on these days. As claiming the information is considered having the force nowadays, keeping up this information secure is among the solitary approaches to keep up this force. During the most recent decade, a few techniques for information security were under exploration. One of these territories is the security of information correspondence. Among the techniques taking care of this issue is digital image watermarking. Digital watermarking is a cycle of information hiding. Digital watermarks permit clients to lawfully utilize content while adding security to the substance to forestall unlawful use. The point of this paper is to introduce a few works around there and look at the presentation of such techniques. In this paper we centre on Least Significant Bit (LSB) techniques in the spatial domain, beginning with a portrayal of the most recent work completed over LSB and finishing with making an examination between different LSB watermarking plans.

Watermarking, Least Significant bit, Spatial Domain, Gray Images, Information Security, and Digital Image.