![]() Modern-day steganography typically aims to be completely undetectable, which my technique is certainly not. “ steganography, which is the art of hiding information inside some other data. “There are two broad terms you could use to describe this technique,” Buchanan said. (While we don’t know exactly how many letters are in the complete works of Shakespeare, according to the Folger Library there are 884,647 words in total.) By embedding a ZIP file of the complete Shakespeare into a portrait of The Bard himself, it pushes Twitter’s text limit way beyond the current 280 characters per tweet. Got that? Okay, so it’s not something that most of us are going to worry about when sharing images on Twitter, but it’s an impressive demo of how much raw data can be squeezed into a tweet. ![]() This technique also survives twitter’s thumbnailer :P /P0Owq9abRC For technical reasons, the contents of the ZIP file had to be split into 64-kilobit chunks, so I used a multipart RAR archive, which finally contained the text document.”Īssuming this all works out, the image in this tweet is also a valid ZIP archive, containing a multipart RAR archive, containing the complete works of Shakespeare. The ZIP file format is flexible enough that I was able to make the file simultaneously valid as a JPEG and ZIP file. So I crafted an image file which also contains a ZIP archive inside its ICC profile. “However, I found that ‘ICC profile’ metadata is left untouched. ![]() “Twitter filters most metadata from images, presumably for privacy and data usage reasons,” Buchanan told Digital Trends. Carried out by David Buchanan, a third-year student at Cardiff University in the U.K., it’s an amazing demonstration of how computers can be used to embed hidden messages in plain sight. It might sound like a plot point in a Dan Brown novel, but it’s not: A computer science undergraduate really has managed to hide the complete works of William Shakespeare, one of the world’s greatest writers, in a single tiny image that was shared in a Twitter message. ![]()
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