Data Hiding in Steganography


In the world of computer and digital forensics, data hiding techniques play a crucial role in concealing information within seemingly innocuous files. Two commonly used methods for this purpose are Least Significant Bit (LSB) and Most Significant Bit (MSB) steganography. In this blog, we will delve into these techniques and their application using a BMP image file named Parrots.bmp.

Understanding Steganography

Steganography is the art and science of concealing data within other data in a way that is difficult to detect. It's often used for various purposes, including data security and covert communication. One of the primary domains where steganography is applied is digital images.

Applying LSB Steganography

Applying MSB Steganography

Do the first two steps above LSB and continue down here:

When applying the Most Significant Bit (MSB) method to hide data in an image, significant changes in pixel color occur, making alterations more noticeable compared to the Least Significant Bit (LSB) method. The MSB method can lead to visible artifacts, distortions, and a degradation of image quality since the most significant bit has a more substantial impact on pixel values. Additionally, lossy compression in image formats like JPEG may not preserve pixel values accurately, making the MSB method less suitable for data hiding. Data extraction from images modified using the MSB method is also more complex, and the trade-off between data hiding and image quality must be carefully considered in its use. 

Important Considerations


Hasan Hashim

Cyber Security and Digital Forensics