Everybody’s heard of cryptography, but have you heard of steganography? In cryptography, the secret message is written in code. In steganography, the information is hidden — sometimes in plain sight. Here’s more from MOTHERBOARD:

Steganography does not attract attention to itself as an object of scrutiny. So, while cryptography renders data unreadable, steganography hides the presence of the information altogether….

The personal computer was a lightning rod for new approaches to steganography. The sheer amount of data inside one image offered practitioners an expansive shadow in which to sneak around. Pioneers tried all sorts of approaches: blog-steganography, sneaking data into file info, hiding messages inside file folder systems, and even strategically delaying packets of information that made up an image, the sequence of which formed a message unto itself.

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