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As data represent a key asset for today's organizations, the problem of how to protect this data from theft and misuse is at the forefront of these organizations' minds. Even though today several data security techniques are available to protect data and computing infrastructures, many such techniques -- such as firewalls and network security tools -- are unable to protect data from attacks posed by those working on an organization's "inside." These "insiders" usually have authorized access to relevant information systems, making it extremely challenging to block the misuse of information while still allowing them to do their jobs. This book discusses several techniques that can provide effective protection against attacks posed by people working on the inside of an organization. Chapter One introduces the notion of insider threat and reports some data about data breaches due to insider threats. Chapter Two covers authentication and access control techniques, and Chapter Three shows how these general security techniques can be extended and used in the context of protection from insider threats. Chapter Four addresses anomaly detection techniques that are used to determine anomalies in data accesses by insiders. These anomalies are often indicative of potential insider data attacks and therefore play an important role in protection from these attacks. Security information and event management (SIEM) tools and fine-grained auditing are discussed in Chapter Five. These tools aim at collecting, analyzing, and correlating -- in real-time -- any information and event that may be relevant for the security of an organization. As such, they can be a key element in finding a solution to such undesirable insider threats. Chapter Six goes on to provide a survey of techniques for separation-of-duty (SoD). SoD is an important principle that, when implemented in systems and tools, can strengthen data protection from malicious insiders. However, to date, very few approaches have been proposed for implementing SoD in systems. In Chapter Seven, a short survey of a commercial product is presented, which provides different techniques for protection from malicious users with system privileges -- such as a DBA in database management systems. Finally, in Chapter Eight, the book concludes with a few remarks and additional research directions. Table of Contents: Introduction / Authentication / Access Control / Anomaly Detection / Security Information and Event Management and Auditing / Separation of Duty / Case Study: Oracle Database Vault / Conclusion.

Computer networks. --- Data structures (Computer science). --- Information theory. --- Computer Communication Networks. --- Data Structures and Information Theory.

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Object-oriented databases --- Bases de données à objets

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This title discusses the emerging trends in defining, measuring, and operationalizing reputation as a new and essential component of the knowledge that is generated and consumed online. The book also proposes a future research agenda related to these issues—with the ultimate goal of shaping the next generation of theoretical and analytic strategies needed for understanding how knowledge markets are influenced by social interactions and reputations built around functional roles. Roles, Trust, and Reputation in Social Media Knowledge Markets exposes issues that have not been satisfactorily dealt with in the current literature. In a broader sense, the volume aims to change the way in which knowledge generation in social media spaces is understood and utilized. The tools, theories, and methodologies proposed here offer concrete avenues for developing the next generation of research strategies and applications that will help: tomorrow’s information consumers make smarter choices, developers to create new tools, and researchers to launch new research programs.

Physics. --- Complex Networks. --- Data Mining and Knowledge Discovery. --- Complex Systems. --- Methodology of the Social Sciences. --- Computer Appl. in Social and Behavioral Sciences. --- Data mining. --- Social sciences --- Physique --- Exploration de données (Informatique) --- Sciences sociales --- Data processing. --- Methodology. --- Informatique --- Méthodologie --- Social sciences_xData processing. --- Social sciences_xMethodology. --- Physics --- Physical Sciences & Mathematics --- Physics - General --- Knowledge, Sociology of. --- Social media. --- Knowledge, Theory of (Sociology) --- Sociology of knowledge --- User-generated media --- Application software. --- System theory. --- Social sciences. --- Communication --- User-generated content --- Knowledge, Theory of --- Public opinion --- Sociology --- Social epistemology --- Applications of Graph Theory and Complex Networks. --- Algorithmic knowledge discovery --- Factual data analysis --- KDD (Information retrieval) --- Knowledge discovery in data --- Knowledge discovery in databases --- Mining, Data --- Database searching --- Application computer programs --- Application computer software --- Applications software --- Apps (Computer software) --- Computer software --- Behavioral sciences --- Human sciences --- Sciences, Social --- Social science --- Social studies --- Civilization --- Systems, Theory of --- Systems science --- Science --- Natural philosophy --- Philosophy, Natural --- Physical sciences --- Dynamics --- Philosophy

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This book introduces the fundamental concepts of homomorphic encryption. From these foundations, applications are developed in the fields of private information retrieval, private searching on streaming data, privacy-preserving data mining, electronic voting and cloud computing. The content is presented in an instructional and practical style, with concrete examples to enhance the reader's understanding. This volume achieves a balance between the theoretical and the practical components of modern information security. Readers will learn key principles of homomorphic encryption as well as their application in solving real world problems.

Data encryption (Computer science) --- Computer security --- Technological innovations. --- Computer privacy --- Computer system security --- Computer systems --- Computers --- Cyber security --- Cybersecurity --- Electronic digital computers --- Protection of computer systems --- Security of computer systems --- Data protection --- Security systems --- Hacking --- Data encoding (Computer science) --- Encryption of data (Computer science) --- Cryptography --- Protection --- Security measures --- Data encryption (Computer science). --- Data mining. --- Cryptology. --- Applications of Graph Theory and Complex Networks. --- Mathematical Applications in Computer Science. --- Data Mining and Knowledge Discovery. --- Security Science and Technology. --- Algorithmic knowledge discovery --- Factual data analysis --- KDD (Information retrieval) --- Knowledge discovery in data --- Knowledge discovery in databases --- Mining, Data --- Database searching --- Physics. --- Computer science—Mathematics. --- Computer mathematics. --- System safety. --- Safety, System --- Safety of systems --- Systems safety --- Accidents --- Industrial safety --- Systems engineering --- Computer mathematics --- Electronic data processing --- Mathematics --- Natural philosophy --- Philosophy, Natural --- Physical sciences --- Dynamics --- Prevention --- Computer science --- Mathematics.

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This book constitutes the refereed proceedings of the 6 th International Conference on Network and System Security, NSS 2012, held in Wuyishan, Fujian, China, in November 2012. The 39 revised full papers presented were carefully reviewed and selected from 173 submissions. The papers cover the following topics: network security, system security, public key cryptography, privacy, authentication, security analysis, and access control.

Engineering & Applied Sciences --- Computer Science --- Computer science. --- Computer communication systems. --- Computer security. --- Data encryption (Computer science). --- Database management. --- Management information systems. --- E-commerce. --- Computer Science. --- Systems and Data Security. --- Computer Communication Networks. --- Data Encryption. --- Database Management. --- Management of Computing and Information Systems. --- e-Commerce/e-business. --- Information Systems. --- Cryptology. --- Data base management --- Data services (Database management) --- Database management services --- DBMS (Computer science) --- Generalized data management systems --- Services, Database management --- Systems, Database management --- Systems, Generalized database management --- Electronic data processing --- Data encoding (Computer science) --- Encryption of data (Computer science) --- Computer security --- Cryptography --- Computer privacy --- Computer system security --- Computer systems --- Computers --- Cyber security --- Cybersecurity --- Electronic digital computers --- Protection of computer systems --- Security of computer systems --- Data protection --- Security systems --- Hacking --- Protection --- Security measures --- Computer networks --- Cybercommerce --- E-business --- E-commerce --- E-tailing --- eBusiness --- eCommerce --- Electronic business --- Internet commerce --- Internet retailing --- Online commerce --- Web retailing --- Commerce --- Information superhighway --- Informatics --- Science --- Computer-based information systems --- EIS (Information systems) --- Executive information systems --- MIS (Information systems) --- Sociotechnical systems --- Information resources management --- Management --- Communication systems, Computer --- Computer communication systems --- Data networks, Computer --- ECNs (Electronic communication networks) --- Electronic communication networks --- Networks, Computer --- Teleprocessing networks --- Data transmission systems --- Digital communications --- Electronic systems --- Information networks --- Telecommunication --- Cyberinfrastructure --- Network computers --- Communication systems --- Distributed processing