In the modern world of e-business and e-commerce, security of the confidentiality, integrity, and availability (CIA triad) of stored information along with transmitted data is essential. In cryptography, DNA cryptography is a newly emerging discipline arising from the work of DNA computing. The idea of DNA cryptography is based on DNA molecules capable of storing, processing, and transmitting information. The biological history of DNA cryptography and the theory of DNA computation are briefly described in this article. In comparison to traditional cryptography and quantum cryptography areas, DNA cryptography progresses via security and its applications. The primary objective of DNA cryptography research is to study the DNA molecule's features and reactions, create appropriate hypotheses, discover potential development pathways, find simple DNA cryptography implementation methods, and lay the groundwork for future growth.