Anti-Steganography: Combating External Threats and Data Loss in Images

Data loss occurs in many ways, the most obvious being via information transferred onto a USB, the 'insider threat' of employees removing data unintentionally or maliciously, or various methods via email. However, you don't typically think to look for data within images.

“Steganography” is a term used to describe the means of covert communications and comes from the Greek Steganos, or “covered” and the Latin graphia, or ‘writing’. Digitally, steganography is the process of hiding data within innocent looking files, like images. Additional content is injected into images without changing the appearance on the surface. Huge amounts of data can be hidden within a single image without anyone knowing it has been compromised!

It is also extremely difficult, as well as expensive, to determine what algorithm was used to embed the data into the image, making it almost impossible to decode hidden data unless you have the application that encoded it. Often the data is also password encrypted meaning, it's highly unlikely that anyone could discover what data was hidden in the carrier file.

Read our Solution Brief to find out how Clearswift's Anti-Steganography solution tackles these issues.

Tags: Solution Briefs, Data Loss Prevention