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Importance of Steganalysis

Module by: Danny Blanco, Elliot Ng, Charlie Ice, Bryan Grandy. E-mail the authors

Steganalysis

Importance of Steganalysis

Image steganalysis is the science of analyzing images in order to discover methods of discovering and detecting hidden messages and data within the images. Statistical digital signal processing is often used in order to detect data within images.

It is important to detect hidden messages within the images. On the steganography side, this is important in order to find methods in order to improve the algorithm implementing steganography. By exposing the flaws to the algorithm, the user can further improve the algorithm in order to make it more difficult to detect whether or not data is hidden in the images.

Steganalysis is also especially important in the security aspect, namely monitoring a user’s communication with the outside world. In the age of Internet, images are sent via email or by posting on websites. Detecting whether or not data is hidden in the images will allow the monitor to further analyze the suspicious images in order find what the hidden message is.

Figure 1: Can you tell if there is hidden data?
Figure 1 (rice_walk)

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Definition of a lens

Lenses

A lens is a custom view of the content in the repository. You can think of it as a fancy kind of list that will let you see content through the eyes of organizations and people you trust.

What is in a lens?

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| A lens I own (?)

Definition of a lens

Lenses

A lens is a custom view of the content in the repository. You can think of it as a fancy kind of list that will let you see content through the eyes of organizations and people you trust.

What is in a lens?

Lens makers point to materials (modules and collections), creating a guide that includes their own comments and descriptive tags about the content.

Who can create a lens?

Any individual member, a community, or a respected organization.

What are tags? tag icon

Tags are descriptors added by lens makers to help label content, attaching a vocabulary that is meaningful in the context of the lens.

| External bookmarks