Recently, ensemble learning algorithms are proposed to address the challenges of high dimensional classification for steganalysis caused by the curse of dimensionality and obtain superior performance. In this paper, we extend the state-of-the-art steganalysis tool developed by Kodovsky and Fridrich: the Kodovsky’s ensemble classifier and propose a novel method, called CSRS for high-dimensional ...

Steganography is the art of secret communication between two parties that not only conceals the contents of a message, but also its existence. Steganalysis attempts to detect the existence of embedded data in a steganographically altered cover file. Many algorithms have been proposed, but so far each has had some weakness that has allowed its effects to be detected, usually through first or sec...

We give initial results from a new project which performs statistically accurate evaluation of the reliability of image steganalysis algorithms. The focus here is on the Pairs and RS methods, for detection of simple LSB steganography in grayscale bitmaps, due to Fridrich et al. Using libraries totalling around 30,000 images we have measured the performance of these methods and suggest changes w...

After the September 11, 2001 terrorist attack on the World Trade Center the United States declared war on terrorism. The Patriot Act (H.R. 3162) was passed, which authorizes law enforcement agencies to monitor and intercept the electronic communications of suspected terrorists. This meant that telephone communication and encrypted telephony would no longer be safe for terrorists to communicate ...

Steganography is the science of writing hidden messages. In this context, an individual attempts to communicate with an entity without arousing suspicious on the very existence of this communication. This science completes cryptography science (COMmunication SECurity – COMSEC) when invisibility in addition to security is required. This PhD work, which has been carried out under the guidance and...

Recently, there has been a lot of interest in the fields of Steganography and Steganalysis. Steganography involves hiding information in a cover (carrier) media to obtain the stego media, in such a way that the cover media is perceived not to have any embedded message for its unintended recipients. Steganalysis is the mechanism of detecting the presence of hidden information in the stego media ...

A new coverless image information hiding method based on generative model is proposed, we feed the secret image to the generative model database, and generate a meaning-normal and independent image different from the secret image, then, the generated image is transmitted to the receiver and is fed to the generative model database to generate another image visually the same as the secret image. ...

Steganography is the technique of hiding confidential information within any media. Steganography is often confused with cryptography because the two are similar in the way that they both are used to protect confidential information. The difference between the two is in the appearance in the processed output; the output of steganography operation is not apparently visible but in cryptography th...

Steganalysis of sequential steganography is presented in this paper. Abrupt change in statistics due to sequential embedding is exploited by the proposed technique. Analytical derivations are presented for several cases along with experimental results. Experiments show that the proposed method can be used quite effectively to detect locations and length of messages embedded using spread spectru...

The paper concerns available steganographic techniques that can be used for creating covert channels for VoIP (Voice over Internet Protocol) streams. Apart from characterizing existing steganographic methods we provide new insights by presenting two new techniques. The first one is network steganography solution which exploits free/unused protocols’ fields and is known for IP, UDP or TCP protoc...