Razzle dazzle camouflage3/17/2023 ![]() The steps necessary to achieve a modicum of privacy and security in the digital age are ultimately up to the individual or organization. Unfortunately most modern operating systems are neither equipped to handle grayscale fonts, nor designed with the capability of adding custom noise to each individual font character. Soft Tempest is a font that is made up of grayscale glyph images that are individually tailored to add random noise to the least significant bits (LSB) of the image. To protect information from such electromagnetic leakage, Ross Anderson and Markus Kuhn of the University of Cambridge proposed using a font called “Soft Tempest” which is very similar to, but more advanced than the ZXX noise font. This radiation can be captured from a distance, allowing an eavesdropper to reconstruct meaningful information about the data being processed on the device. ![]() For example, all computers run on electricity, and as a consequence generate electromagnetic radiation. The end points where a message is encrypted and decrypted are still vulnerable to attack. If raw text data is going to be sent over a network, it must be encryptedto be secure. It is the ASCII-encoded representation of the letters and words that carries the important data when text is not converted to an image format. Those with tin foil hats may note that converting text documents to these new ZXX typefaces does nothing to obscure the (typically) ASCII binary data underneath the hood. There are font characters containing camouflage prints, false characters, noise patterns, and even characters crossed out with X’s. ![]() Mun uses several different techniques to add distortion to the characters in the ZXX fonts. ZXX is a typeface designed to be unreadable by Optical Character Recognition (OCR) software, yet retain its legibility to the human eye. At the end of May, 2013, artist and former National Security Agency (NSA) contractor Sang Mun published a collection of fonts called “ZXX”. Razzle Dazzle Camouflage applied to a shipįast forward to the 21st century, and there are new forms of Razzle Dazzle being deployed.
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