Data Hiding: Exposing Concealed Data in Multimedia, Operating Systems, Mobile Devices and Network Protocols 1st edition by Ragg
Data Hiding: Exposing Concealed Data in Multimedia, Operating Systems, Mobile Devices and Network Protocols 1st edition by Raggo, Michael T., Hosmer, Chet
English | 2013 | ASIN: B011DBX6SC | 226 Pages | ePub | 6 MB
English | 2013 | ASIN: B011DBX6SC | 226 Pages | ePub | 6 MB
It’s 4 AM at Spika, a small cramped Internet Café in downtown Prague. A young student is sipping a coffee in the back corner of the café. He enters a blog and posts a photograph with the caption Zhelayu vsego khoroshego or (wishing you the best). At precisely 6 A.M. dozens of Botnet operators visit the same blog page automatically retrieving the photograph posted as instructed. The operators have repeated this operation for months, as done many times before, the bot operators save the image and copy down the caption. They extract the first 8 Fibonacci characters from the caption Zhelayu vsego khoroshego (1,1,2,3,5,8,13,21) that yield “ZZhea oh”. Next they load the image into a steganography program named JPHS, and use the Fibonacci extracted pass phrase “ZZhea oh”. However, unlike days before, the program asks for the name of a file to store the hidden contents. Normally it rudely reports incorrect pass phrase …. But not today.