Steganography is a widely-used technique for digital data hiding. Image steganography is the most popular among all other kinds of steganography. In this article, a novel key-based blind method for RGB image steganography where multiple images can be hidden simultaneously is described. The proposed method is based on Discrete Cosine Transformation…

"Sleazeware" is the authors' term for spyware, adware, malware, trackware, foistware, trojans, and other programs that sleaze into computers, either as a hidden component or by tricking someone into downloading them. Once in the machine, the program phones home for purposes ranging from simply reporting where people browse to downloading…

With today's growth in the use of electronic information systems for e-mail, data development and research, and the relative ease of access to such resources, protecting one's data and correspondence has become a great concern. "Pretty Good Privacy" (PGP), an encryption program developed by Phil Zimmermann, may be the software tool that…

The 1997 WebNet conference addressed research, new developments, and experiences related to the Internet and intranets. The 257 contributions of WebNet 97 contained in this proceedings comprise the full and short papers accepted for presentation at the conference. Included are positions papers by leading experts in the field; descriptions of ideas…

The IADIS CELDA 2012 Conference intention was to address the main issues concerned with evolving learning processes and supporting pedagogies and applications in the digital age. There had been advances in both cognitive psychology and computing that have affected the educational arena. The convergence of these two disciplines is increasing at a…