Due to speedy development in internet technology, peoples have usually dependent upon internet enabled digital equipment’s in a wide range of application. As a result, different challenges relating to information security and authentication are brought up with multimedia objects in both the civil and defense sectors. The use of watermarking technology eliminates the need for an overheard as in traditional encryption by integrating it directly into various frames. As a result, it is effective when employed for data encryption that require restricted resources, as those engaged in the Internet of Things (IoT). The projected study illustrates a spatial domain approach using the concept of entropy for digital watermarking grounded on LSB substitution and Arnold transform. Original Image chunk keeping highest entropy value is employed for watermark implantation. In addition, the perceptual excellence, robustness and security of the watermarked images produced by the proposed framework have been compared to certain cutting-edge watermarking techniques using image quality parameters namely MSE, PSNR, SSIM NPCR, UACI and NCC.