A powerful argument for new laws and policies regarding cyber-security, from the former US Secretary of Homeland Security. The most dangerous threat we-individually and as a society-face today is no longer military, but rather the increasingly pervasive exposure of our personal information; nothing undermines our freedom more than losing control of information about ourselves. And yet, as daily events underscore, we are ever more vulnerable to cyber-attack. In this bracing book, Michael Chertoff makes clear that our laws and policies surrounding the protection of personal information, written for an earlier time, need to be completely overhauled in the Internet era. On the one hand, the collection of data-more widespread by business than by government, and impossible to stop-should be facilitated as an ultimate protection for society. On the other, standards under which information can be inspected, analysed or used must be significantly tightened. In offering his compelling call for action, Chertoff argues that what is at stake is not only the simple loss of privacy, which is almost impossible to protect, but also that of individual autonomy-the ability to make personal choices free of manipulation or coercion. Offering colourful stories over many decades that illuminate the three periods of data gathering we have experienced, Chertoff explains the complex legalities surrounding issues of data collection and dissemination today and charts a forceful new strategy that balances the needs of government, business and individuals alike.

Information security has a major gap when cryptography is implemented. Cryptographic algorithms are well defined, key management schemes are well known, but the actual deployment is typically overlooked, ignored, or unknown. Cryptography is everywhere. Application and network architectures are typically well-documented but the cryptographic architecture is missing. This book provides a guide to discovering, documenting, and validating cryptographic architectures. Each chapter builds on the next to present information in a sequential process. This approach not only presents the material in a structured manner, it also serves as an ongoing reference guide for future use.

Enterprise Level Security 2: Advanced Topics in an Uncertain World follows on from the authors' first book on Enterprise Level Security (ELS), which covered the basic concepts of ELS and the discoveries made during the first eight years of its development. This book follows on from this to give a discussion of advanced topics and solutions, derived from 16 years of research, pilots, and operational trials in putting an enterprise system together. The chapters cover specific advanced topics derived from painful mistakes and numerous revisions of processes. This book covers many of the topics omitted from the first book including multi-factor authentication, cloud key management, enterprise change management, entity veracity, homomorphic computing, device management, mobile ad hoc, big data, mediation, and several other topics. The ELS model of enterprise security is endorsed by the Secretary of the Air Force for Air Force computing systems and is a candidate for DoD systems under the Joint Information Environment Program. The book is intended for enterprise IT architecture developers, application developers, and IT security professionals. This is a unique approach to end-to-end security and fills a niche in the market.

Prepare for success on the challenging CASP+ CAS-004 exam In the newly updated Second Edition of CASP+ CompTIA Advanced Security Practitioner Practice Tests Exam CAS-004, accomplished cybersecurity expert Nadean Tanner delivers an extensive collection of CASP+ preparation materials, including hundreds of domain-by-domain test questions and two additional practice exams. Prepare for the new CAS-004 exam, as well as a new career in advanced cybersecurity, with Sybex's proven approach to certification success. You'll get ready for the exam, to impress your next interviewer, and excel at your first cybersecurity job. This book includes: Comprehensive coverage of all exam CAS-004 objective domains, including security architecture, operations, engineering, cryptography, and governance, risk, and compliance In-depth preparation for test success with 1000 practice exam questions Access to the Sybex interactive learning environment and online test bank Perfect for anyone studying for the CASP+ Exam CAS-004, CASP+ CompTIA Advanced Security Practitioner Practice Tests Exam CAS-004 is also an ideal resource for anyone with IT security experience who seeks to brush up on their skillset or seek a valuable new CASP+ certification.

"A systematic review of the structure and context of the blockchain-derived economic model... (the book) describes cryptoeconomics in connection with the game theory, behavioral economics and others in simple understandable language."-Wang Feng, founder of Linekong Interactive Group and Mars Finance, partner in Geekbang Venture Capital Blockchain technology has subverted existing perceptions and is the start of an economic revolution, called, cryptoeconomics. Blockchain is a key component of cryptoeconomics. Vlad Zamfir, a developer of Ethereum, defines this term as "a formal discipline that studies protocols that governs the production, distribution, and consumption of goods and services in a decentralized digital economy. Cryptoeconomics is a practical science that focuses on the design and characterization of these protocols". This book explains the structures of blockchain-derived economic models, their history, and their application. It uses real-world cases to illustrate the relationship between cryptoeconomics and blockchain. Blockchain technology solves trust issues. A blockchain application can restrict behavior on the blockchain through a reward and punishment system that enables consensus in an innovative way. The greatest significance of cryptoeconomics lies in guaranteeing safety, stability, activity, and order in a decentralized consensus system. Security and stability are achieved mainly by cryptographical mechanisms. Activity and order are achieved through economic mechanisms. Cryptoeconomics and Blockchain: Ignighting a New Era of Blockchain discusses the most popular consensus algorithms and optimization mechanisms. With examples explained in clear and simple terms that are easy to understand, the book also explores economic mechanisms of blockchain such as game theory and behavioral economics.

A practical roadmap to protecting against cyberattacks in industrial environments In Practical Industrial Cybersecurity: ICS, Industry 4.0, and IIoT, veteran electronics and computer security author Charles J. Brooks and electrical grid cybersecurity expert Philip Craig deliver an authoritative and robust discussion of how to meet modern industrial cybersecurity challenges. The book outlines the tools and techniques used by practitioners in the industry today, as well as the foundations of the professional cybersecurity skillset required to succeed on the SANS Global Industrial Cyber Security Professional (GICSP) exam. Full of hands-on explanations and practical guidance, this book also includes: Comprehensive coverage consistent with the National Institute of Standards and Technology guidelines for establishing secure industrial control systems (ICS) Rigorous explorations of ICS architecture, module and element hardening, security assessment, security governance, risk management, and more Practical Industrial Cybersecurity is an indispensable read for anyone preparing for the Global Industrial Cyber Security Professional (GICSP) exam offered by the Global Information Assurance Certification (GIAC). It also belongs on the bookshelves of cybersecurity personnel at industrial process control and utility companies. Practical Industrial Cybersecurity provides key insights to the Purdue ANSI/ISA 95 Industrial Network Security reference model and how it is implemented from the production floor level to the Internet connection of the corporate network. It is a valuable tool for professionals already working in the ICS/Utility network environment, IT cybersecurity personnel transitioning to the OT network environment, and those looking for a rewarding entry point into the cybersecurity field.

This sixth volume in the series "Integrity and Internal Control in Information Systems" is a state-of-the-art collection of papers in the area of integrity within information systems and the relationship between integrity in information systems and the overall internal control systems that are established in organizations to support corporate governance codes.
Integrity and Internal Control in Information Systems VI represents a continuation of the dialogue between information security specialists, internal control specialists and the business community. The objectives of this dialogue are: To present methods and techniques that will help business achieve the desired level of integrity in information systems and data; To present the results of research that may in future be used to increase the level of integrity or help management maintain the desired level of integrity; To investigate the shortcomings in the technologies presently in use, shortcomings that require attention in order to protect the integrity of systems in general. The book contains a collection of papers from the Sixth International Working Conference on Integrity and Internal Control in Information Systems (IICIS), sponsored by the International Federation for Information Processing (IFIP) and held in Lausanne, Switzerland in November 2003. It will be essential reading for academics and practitioners in computer science, information technology, business informatics, accountancy and IT-auditing.

The dictionary will contain terms currently used in the broad fields of electronics data protection and data management in today's interconnected world - the Global Village. The terminology will cover all aspects of the modern technology's best practices in multiple subfields, namely: physical (hardware and perimeter) security, wired and wireless telecommunication infrastructure security, internet (e-commerce and business-to-business) security, anti-virus and anti-spyware applications, virtual private networking, theory and practices of cryptography, corporate security policies'methodology, design, implementation and enforcement.
5000 terms in English, German, French and Russian
* a valuable reference tool for both the general public and the industry experts
* can be used as knowledge support in theoretical projects
* could also serve as a handy desktop reference book in day-to-day operations in a multilingual environment

Among the features that make Noiseless Steganography: The Key to Covert Communications a first of its kind: The first to comprehensively cover Linguistic Steganography The first to comprehensively cover Graph Steganography The first to comprehensively cover Game Steganography Although the goal of steganography is to prevent adversaries from suspecting the existence of covert communications, most books on the subject present outdated steganography approaches that are detectable by human and/or machine examinations. These approaches often fail because they camouflage data as a detectable noise by altering digital images, audio files, text, etc. However, such alteration raises suspicion and makes the message discernible by detecting its noise. Addressing such shortcomings, Noiseless Steganography: The Key to Covert Communications introduces a novel Noiseless Steganography Paradigm (Nostega). Rather than hiding data in noise or producing noise, Nostega camouflages messages as well as their transmission in the form of unquestionable data in the generated steganographic cover. The book explains how to use Nostega to determine suitable domains capable of generating unsuspicious steganographic cover in which messages are embedded in the form of innocent data that is compatible with the chosen domain. It presents a number of Nostega-based methodologies, including but not limited to: A novel cover type that enables data to be hidden in plotted graphs A novel methodology that pursues popular games such as chess, checkers, crosswords, and dominoes to conceal messages Comprehensive coverage of linguistic steganography Several novel linguistic steganography methodologies based on Natural Language Processing and Computational Linguistic techniques such as: Education-Centric-Based, Summarization-Based, Natural Language Generation Based, Random-Series-Based, Email Headers Based, Automatic Joke Generation Based, List-Based, and Automatic Notes Generation Based The first book to provide comprehensive coverage of Linguistic Steganography, Graph Steganography, and Game Steganography, it discusses the implementation and steganalysis validation of ten Nostega-based methodologies. It describes how to establish covert channels by employing the selected domain to serve as justification for the interaction and delivery of the cover among the communicating parties. Instead of using contemporary steganography approaches to camouflage your data as noise that is assumed to look innocent, the text provides you with the tools to prevent your adversaries from suspecting the existence of covert communications altogether.

Dear readers, Although it is well-known that confidentiality, integrity and availability are high level objectives of information security, much of the attention in the security arena has been devoted to the confidentiality and availability aspects of security. IFIP TC-ll Working Group 11. 5 has been charged with exploring the area of the integrity objective within information security and the relationship between integrity in information systems and the overall internal control systems that are established in organizations to support the corporate governance codes. In this collection you will not only find the papers that have been presented during the first working conference dedicated to the subject (section A) but also some of the papers that have formed the basis for the current activities of this working group (section B). Finally some information about IFIP TC-ll and its working groups is included (section C). This first working conference is the start for an ongoing dialog between the information security specialists and the internal control specialists so that both may work more effectively together to assist in creating effective business systems in the future."

Digital rights management (DRM) is a type of server software developed to enable secure distribution - and perhaps more importantly, to disable illegal distribution - of paid content over the Web. DRM technologies are being developed as a means of protection against the online piracy of commercially marketed material, which has proliferated through the widespread use of Napster and other peer-to-peer file exchange programs. With the flourish of these file exchange programs, content owners, creators and producers need to have a plan to distribute their content digitally and protect it at the same time-a seemingly impossible task. There are numerous books dealing with copyright, eBusiness, the Internet, privacy, security, content management, and related technical subjects. Additionally, there are several research papers, and almost daily newspaper and magazine articles dealing with digital piracy. However, there are only a few books and documents that bring these together as a basis for profitable exchange of digital content. Digital Rights Management can help content providers make money by unifying the confusing array of concepts that swirl around current presentations of DRM in newspapers and business publications.

'Radiation Effects on Embedded Systems' provides the reader with the major guidelines for coping with radiation effects on components supposed to be included in today's application devoted to operate in space, but also in atmosphere at high altitude or at ground level. It contains a set of chapters based on the tutorials presented at the International School on Effects of Radiation on Embedded Systems for Space Applications (SERESSA) that was held in Manaus, Brazil, from 20 to 25 November 2005.

This volume contains papers presented at the fourth working conference on Communications and Multimedia Security (CMS'99), held in Leuven, Belgium from September 20-21, 1999. The Conference, arrangedjointly by Technical Committees 11 and 6 of the International Federation of Information Processing (IFIP), was organized by the Department of Electrical Engineering of the Katholieke Universiteit Leuven. The name "Communications and Multimedia Security" was used for the first time in 1995, when Reinhard Posch organized the first in this series of conferences in Graz, Austria, following up on the previously national (Austrian) IT Sicherheit conferences held in Klagenfurt (1993) and Vienna (1994). In 1996, CMS took place in Essen, Germany; in 1997 the conference moved to Athens, Greece. The Conference aims to provide an international forum for presentations and discussions on protocols and techniques for providing secure information networks. The contributions in this volume review the state-of the-art in communications and multimedia security, and discuss practical of topics experiences and new developments. They cover a wide spectrum inc1uding network security, web security, protocols for entity authentication and key agreement, protocols for mobile environments, applied cryptology, watermarking, smart cards, and legal aspects of digital signatures."

In Mathematical Foundations of Public Key Cryptography, the authors integrate the results of more than 20 years of research and teaching experience to help students bridge the gap between math theory and crypto practice. The book provides a theoretical structure of fundamental number theory and algebra knowledge supporting public-key cryptography. Rather than simply combining number theory and modern algebra, this textbook features the interdisciplinary characteristics of cryptography-revealing the integrations of mathematical theories and public-key cryptographic applications. Incorporating the complexity theory of algorithms throughout, it introduces the basic number theoretic and algebraic algorithms and their complexities to provide a preliminary understanding of the applications of mathematical theories in cryptographic algorithms. Supplying a seamless integration of cryptography and mathematics, the book includes coverage of elementary number theory; algebraic structure and attributes of group, ring, and field; cryptography-related computing complexity and basic algorithms, as well as lattice and fundamental methods of lattice cryptanalysis. The text consists of 11 chapters. Basic theory and tools of elementary number theory, such as congruences, primitive roots, residue classes, and continued fractions, are covered in Chapters 1-6. The basic concepts of abstract algebra are introduced in Chapters 7-9, where three basic algebraic structures of groups, rings, and fields and their properties are explained. Chapter 10 is about computational complexities of several related mathematical algorithms, and hard problems such as integer factorization and discrete logarithm. Chapter 11 presents the basics of lattice theory and the lattice basis reduction algorithm-the LLL algorithm and its application in the cryptanalysis of the RSA algorithm. Containing a number of exercises on key algorithms, the book is suitable for use as a textbook for undergraduate students and first-year graduate students in information security programs. It is also an ideal reference book for cryptography professionals looking to master public-key cryptography.

The aim of cryptography is to design primitives and protocols that withstand adversarial behavior. Information theoretic cryptography, how-so-ever desirable, is extremely restrictive and most non-trivial cryptographic tasks are known to be information theoretically impossible. In order to realize sophisticated cryptographic primitives, we forgo information theoretic security and assume limitations on what can be efficiently computed. In other words we attempt to build secure systems conditioned on some computational intractability assumption such as factoring, discrete log, decisional Diffie-Hellman, learning with errors, and many more. In this work, based on the 2013 ACM Doctoral Dissertation Award-winning thesis, we put forth new plausible lattice-based constructions with properties that approximate the sought after multilinear maps. The multilinear analog of the decision Diffie-Hellman problem appears to be hard in our construction, and this allows for their use in cryptography. These constructions open doors to providing solutions to a number of important open problems.

The aim of cryptography is to design primitives and protocols that withstand adversarial behavior. Information theoretic cryptography, how-so-ever desirable, is extremely restrictive and most non-trivial cryptographic tasks are known to be information theoretically impossible. In order to realize sophisticated cryptographic primitives, we forgo information theoretic security and assume limitations on what can be efficiently computed. In other words we attempt to build secure systems conditioned on some computational intractability assumption such as factoring, discrete log, decisional Diffie-Hellman, learning with errors, and many more. In this work, based on the 2013 ACM Doctoral Dissertation Award-winning thesis, we put forth new plausible lattice-based constructions with properties that approximate the sought after multilinear maps. The multilinear analog of the decision Diffie-Hellman problem appears to be hard in our construction, and this allows for their use in cryptography. These constructions open doors to providing solutions to a number of important open problems.

The world's most infamous hacker offers an insider's view of the low-tech threats to high-tech security
Kevin Mitnick's exploits as a cyber-desperado and fugitive form one of the most exhaustive FBI manhunts in history and have spawned dozens of articles, books, films, and documentaries. Since his release from federal prison, in 1998, Mitnick has turned his life around and established himself as one of the most sought-after computer security experts worldwide. Now, in The Art of Deception, the world's most notorious hacker gives new meaning to the old adage, "It takes a thief to catch a thief."
Focusing on the human factors involved with information security, Mitnick explains why all the firewalls and encryption protocols in the world will never be enough to stop a savvy grifter intent on rifling a corporate database or an irate employee determined to crash a system. With the help of many fascinating true stories of successful attacks on business and government, he illustrates just how susceptible even the most locked-down information systems are to a slick con artist impersonating an IRS agent. Narrating from the points of view of both the attacker and the victims, he explains why each attack was so successful and how it could have been prevented in an engaging and highly readable style reminiscent of a true-crime novel. And, perhaps most importantly, Mitnick offers advice for preventing these types of social engineering hacks through security protocols, training programs, and manuals that address the human element of security.

Cyber Crime and Cyber Terrorism Investigator's Handbook is a vital tool in the arsenal of today's computer programmers, students, and investigators. As computer networks become ubiquitous throughout the world, cyber crime, cyber terrorism, and cyber war have become some of the most concerning topics in today's security landscape. News stories about Stuxnet and PRISM have brought these activities into the public eye, and serve to show just how effective, controversial, and worrying these tactics can become. Cyber Crime and Cyber Terrorism Investigator's Handbook describes and analyzes many of the motivations, tools, and tactics behind cyber attacks and the defenses against them. With this book, you will learn about the technological and logistic framework of cyber crime, as well as the social and legal backgrounds of its prosecution and investigation. Whether you are a law enforcement professional, an IT specialist, a researcher, or a student, you will find valuable insight into the world of cyber crime and cyber warfare. Edited by experts in computer security, cyber investigations, and counter-terrorism, and with contributions from computer researchers, legal experts, and law enforcement professionals, Cyber Crime and Cyber Terrorism Investigator's Handbook will serve as your best reference to the modern world of cyber crime.

An essential resource for anyone preparing for the CIPM certification exam and a career in information privacy As cybersecurity and privacy become ever more important to the long-term viability and sustainability of enterprises in all sectors, employers and professionals are increasingly turning to IAPP's trusted and recognized Certified Information Privacy Manager qualification as a tried-and-tested indicator of information privacy management expertise. In IAPP CIPM Certified Information Privacy Manager Study Guide, a team of dedicated IT and privacy management professionals delivers an intuitive roadmap to preparing for the CIPM certification exam and for a new career in the field of information privacy. Make use of pre-assessments, the Exam Essentials feature, and chapter review questions with detailed explanations to gauge your progress and determine where you're proficient and where you need more practice. In the book, you'll find coverage of every domain tested on the CIPM exam and those required to succeed in your first--or your next--role in a privacy-related position. You'll learn to develop a privacy program and framework, as well as manage the full privacy program operational lifecycle, from assessing your organization's needs to responding to threats and queries. The book also includes: A head-start to obtaining an in-demand certification used across the information privacy industry Access to essential information required to qualify for exciting new career opportunities for those with a CIPM credential Access to the online Sybex learning environment, complete with two additional practice tests, chapter review questions, an online glossary, and hundreds of electronic flashcards for efficient studying An essential blueprint for success on the CIPM certification exam, IAPP CIPM Certified Information Privacy Manager Study Guide will also ensure you hit the ground running on your first day at a new information privacy-related job.

Investigate crimes involving cryptocurrencies and other blockchain technologies Bitcoin has traditionally been the payment system of choice for a criminal trading on the Dark Web, and now many other blockchain cryptocurrencies are entering the mainstream as traders are accepting them from low-end investors putting their money into the market. Worse still, the blockchain can even be used to hide information and covert messaging, unknown to most investigators. Investigating Cryptocurrencies is the first book to help corporate, law enforcement, and other investigators understand the technical concepts and the techniques for investigating crimes utilizing the blockchain and related digital currencies such as Bitcoin and Ethereum. Understand blockchain and transaction technologies Set up and run cryptocurrency accounts Build information about specific addresses Access raw data on blockchain ledgers Identify users of cryptocurrencies Extracting cryptocurrency data from live and imaged computers Following the money With nearly $150 billion in cryptocurrency circulating and $3 billion changing hands daily, crimes committed with or paid for with digital cash are a serious business. Luckily, Investigating Cryptocurrencies Forensics shows you how to detect it and, more importantly, stop it in its tracks.

Other books on information security metrics discuss number theory and statistics in academic terms. Light on mathematics and heavy on utility, PRAGMATIC Security Metrics: Applying Metametrics to Information Security breaks the mold. This is the ultimate how-to-do-it guide for security metrics.
Packed with time-saving tips, the book offers easy-to-follow guidance for those struggling with security metrics. Step by step, it clearly explains how to specify, develop, use, and maintain an information security measurement system" "(a comprehensive suite of metrics) to help:

• Security professionals systematically improve information security, demonstrate the value they are adding, and gain management support for the things that need to be done
• Management address previously unsolvable problems rationally, making critical decisions such as resource allocation and prioritization of security relative to other business activities
• Stakeholders, both within and outside the organization, be assured that information security is being competently managed

The PRAGMATIC approach lets you hone in on your problem areas and identify the few metrics that will generate real business value. The book:

• Helps you figure out exactly "what" needs to be measured, "how" to measure it, and most importantly, "why" it needs to be measured
• Scores and ranks more than 150 candidate security metrics to demonstrate the value of the PRAGMATIC method
• Highlights security metrics that are widely used and recommended, yet turn out to be rather poor in practice
• Describes innovative and flexible measurement approaches such as capability maturity metrics with continuous scales
• Explains how to minimize both measurement and security risks using complementary metrics for greater assurance in critical areas such as governance and compliance

In addition to its obvious utility in the information security realm, the PRAGMATIC approach, introduced for the first time in this book, has broader application across diverse fields of management including finance, human resources, engineering, and production in fact any area that suffers a surplus of data but a deficit of useful information.

Visit Security Metametrics. Security Metametrics supports the global community of professionals adopting the innovative techniques laid out in "PRAGMATIC Security Metrics." If you, too, are struggling to make much sense of security metrics, or searching for better metrics to manage and improve information security, Security Metametrics is the place. http: //securitymetametrics.com/

GUIDE TO NETWORK DEFENSE AND COUNTERMEASURES provides a thorough guide to perimeter defense fundamentals, including intrusion detection and firewalls. This trusted text also covers more advanced topics such as security policies, network address translation (NAT), packet filtering and analysis, proxy servers, virtual private networks (VPN), and network traffic signatures. Thoroughly updated, the new third edition reflects the latest technology, trends, and techniques including virtualization, VMware, IPv6, and ICMPv6 structure, making it easier for current and aspiring professionals to stay on the cutting edge and one step ahead of potential security threats. A clear writing style and numerous screenshots and illustrations make even complex technical material easier to understand, while tips, activities, and projects throughout the text allow you to hone your skills by applying what you learn. Perfect for students and professionals alike in this high-demand, fast-growing field, GUIDE TO NETWORK DEFENSE AND COUNTERMEASURES, Third Edition, is a must-have resource for success as a network security professional.

RC4 Stream Cipher and Its Variants is the first book to fully cover the popular software stream cipher RC4. With extensive expertise in stream cipher cryptanalysis and RC4 research, the authors focus on the analysis and design issues of RC4. They also explore variants of RC4 and the eSTREAM finalist HC-128. After an introduction to the vast field of cryptology, the book reviews hardware and software stream ciphers and describes RC4. It presents a theoretical analysis of RC4 KSA, discussing biases of the permutation bytes toward secret key bytes and absolute values. The text explains how to reconstruct the secret key from known state information and analyzes the RC4 PRGA in detail, including a sketch of state recovery attacks. The book then describes three popular attacks on RC4: distinguishing attacks, Wired Equivalent Privacy (WEP) protocol attacks, and fault attacks. The authors also compare the advantages and disadvantages of several variants of RC4 and examine stream cipher HC-128, which is the next level of evolution after RC4 in the software stream cipher paradigm. The final chapter emphasizes the safe use of RC4. With open research problems in each chapter, this book offers a complete account of the most current research on RC4.

With rapid progress in Internet and digital imaging technology, there are more and more ways to easily create, publish, and distribute images. Considered the first book to focus on the relationship between digital imaging and privacy protection, Visual Cryptography and Secret Image Sharing is a complete introduction to novel security methods and sharing-control mechanisms used to protect against unauthorized data access and secure dissemination of sensitive information.

Image data protection and image-based authentication techniques offer efficient solutions for controlling how private data and images are made available only to select people. Essential to the design of systems used to manage images that contain sensitive data-such as medical records, financial transactions, and electronic voting systems-the methods presented in this book are useful to counter traditional encryption techniques, which do not scale well and are less efficient when applied directly to image files.

An exploration of the most prominent topics in digital imaging security, this book discusses:

• Potential for sharing multiple secrets
• Visual cryptography schemes-based either on the probabilistic reconstruction of the secret image, or on different logical operations for combining shared images
• Inclusion of pictures in the distributed shares
• Contrast enhancement techniques
• Color-image visual cryptography
• Cheating prevention
• Alignment problems for image shares
• Steganography and authentication

In the continually evolving world of secure image sharing, a growing number of people are becoming involved as new applications and business models are being developed all the time. This contributed volume gives academicians, researchers, and professionals the insight of well-known experts on key concepts, issues, trends, and technologies in this emerging field.