Will the rare autographed baseball your great-uncle gave you put your children through college? Is your grandmother's chest of drawers really a seventeenth-century antique, or merely a reproduction? A leader in forgery detection and forensic investigation, Joe Nickell reveals his secrets to detecting artifacts items in Real or Fake: Studies in Authentication. Detailing how the pros determine whether an Abraham Lincoln signature is forged or if a photograph of Emily Dickinson is genuine, Nickell provides the essential tools necessary to identify counterfeits. In this general introduction to the principles of authentication, Nickell provides readers with step-by-step explanations of the science used to detect falsified documents, photographs, and other objects. Illustrating methods used on hit shows such as Antiques Roadshow and History Detectives, Nickell recommends that aspiring investigators employ a comprehensive approach to identifying imitations. One should consider the object's provenance (the origin or derivation of an artifact), content (clues in the scene or item depicted), and material composition (what artifacts are made of), as well as the results of scientific analyses, including radiographic, spectroscopic, microscopic, and microchemical tests. Including fascinating cases drawn from Nickell's illustrious career, Real or Fake combines historical and scientific investigations to reveal reproductions and genuine objects. Nickell explains the warning signs of forgery, such as patching and unnatural pen lifts; chronicles the evolution of writing instruments, inks, and papers; shows readers how to date photographs, papers, and other materials; and traces the development of photographic processes since the mid-nineteenth century. Lavishly illustrated with examples of replicas and authentic objects inspected by Nickell, Real or Fake includes case studies of alleged artifacts including Jack the Ripper's diary, a draft of the Gettysburg Address, notes by Charles Dickens, Jefferson Davis's musket, and debris from the Titanic.

User authentication is the process of verifying whether the identity of a user is genuine prior to granting him or her access to resources or services in a secured environment. Traditionally, user authentication is performed statically at the point of entry of the system; however, continuous authentication (CA) seeks to address the shortcomings of this method by providing increased session security and combating insider threat.

Continuous Authentication Using Biometrics: Data, Models, and Metrics presents chapters on continuous authentication using biometrics that have been contributed by the leading experts in this recent, fast growing research area. These chapters collectively provide a thorough and concise introduction to the field of biometric-based continuous authentication. The book covers the conceptual framework underlying continuous authentication and presents detailed processing models for various types of practical continuous authentication applications.

The text presents an introductory overview of port-based authentication including a description of 802.1X port-based authentication, a history of the standard and the technical documents published, and details of the connections among the three network components. It focuses on the technical aspect of 802.1X and the related protocols and components involved in implementing it in a network. The book provides an in-depth discussion of technology, design, and implementation with a specific focus on Cisco devices. Including examples derived from the 802.1X implementation, it also addresses troubleshooting issues in a Cisco environment. Each chapter contains a subject overview.