Steganography: How Data is Hidden Then Revealed Using Digital Forensics
Special Guest: Sherman Homan – Owner of Stonebridge Solutions
In this episode, we are joined by Sherman Homan, owner of Stonebridge Solutions who will be discussing steganography.
What is Steganography?
Steganography is the art of concealing important information in unimportant disguises. Steganography has often been a smaller player in criminal discovery as it does not lend itself to easily manipulating large amounts of continuous data. Rather, steganography is most useful when trying to conceal relatively static documents. Despite this narrow channel, or maybe because of its limited reach, steganography is often overlooked in digital forensics.
How is it Used?
The desire to protect information transcends morals and ethics. Regardless of the intent, if it is malicious or innocent, everyone wants to hide their data, whether it is to ensure secure transport layer security in web traffic or encryption of hard drives. Steganography is different because it essentially hides the data in plain sight, albeit in bits scrambled together.
Negative Side of Steganography – In the criminal world, steganography comes into play when people need to keep files under strict control. For example, terrorists have been known to store high-level directives within simple videos. Child pornography criminals often hide their images within innocent/unsuspecting pictures.
Positive Side of Steganography – In the medical world, steganography is used in x-rays and MRIs to hide personal patient information. There may be information critical to the medical community studying the data, but more personal information is concealed and identifiable only to those who have the appropriate HIPA approval.
Sherman will also go into detail on how data is hidden with JPEG files, how to conceal it, and how people are able to obtain it.
Listen to the full episode to learn more about steganography, the history of it, and how it is used today.