Steganography, the art and science of concealing messages within other data, has a rich history spanning centuries. In this review paper, we delve into various aspects of steganography, exploring its techniques, detection methods, evaluation criteria, and practical applications. We analyze steganalysis techniques, discuss time-sensitive steganography, and examine historical cases illustrating the ingenuity and effectiveness of covert communication methods. Through this comprehensive examination, we aim to provide insights into the evolving landscape of steganography and its significance in contemporary digital communication.