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Selective Grouping Algorithm For Low Latency Anonymous Systems
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Book Synopsis Selective Grouping Algorithm for Low Latency Anonymous Systems by : Vishal Gupta
Download or read book Selective Grouping Algorithm for Low Latency Anonymous Systems written by Vishal Gupta and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Low latency anonymous communications are prone to timing analysis attacks. It is a technique by which the adversary can de-anonymize the user by correlating packet timing patterns. A recent proposal to stop these attacks is called Dependent Link padding. However, it creates high dummy packets overhead in the network. In this work we propose selective grouping, a padding scheme that protects users in an anonymity system from those attacks with minimal overhead. The aim is to decrease overhead by dividing users in different groups while maintaining good anonymity. The key idea of our approach is to group clients with similar timing patterns together by providing a strict delay bound. We ran simulation experiments to test the effectiveness of these techniques and to measure the amount of extra network congestion. We have also statistically analyzed bursty traffic in the network by using the mean and standard deviation of inter packet delays over a fixed duration. The result of bursty traffic analysis added one more dimension to the count of packets for grouping clients efficiently. To analyze anonymity, we ran a statistical disclosure attack against our selective grouping defense. We performed extensive sets of experiments to find a threshold value at which selective grouping achieves good profiling without adding excess dummy packets. We show that selective grouping is very effective at resisting timing analysis attacks and are still able to provide good anonymity with minimal overhead added to the network.
Download or read book SubRosa 2 written by Payap Sirinam and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A circuit-based low-latency anonymous communication service such as Tor helps Internet users hide their IP addresses and thereby conceal their identities when communicating online. However, this kind of service is vulnerable to timing analysis attacks that can discern the relationship between incoming and outgoing messsages in order to find correlations between them. The attacker can use this information to reveal the idenity of the internet users without knowing the IP addresses concealed in the anonymous communication services. Dependent link padding (DLP) is a scheme propsed to enable anonymity systems to resist these attacks. However, DLP adds high overhead from dummy packets in the network systems, resulting in poor quality of service. We have developed a Tor-like experimental evaluation platform called SubRosa 2 for studying and investigating the overall dummy packets overhead on each scheme that is used to prevent timing timing analysis attacks. We have developed our platform on real distributed networks by using the DETERLab network testbed, which is a public facility for medium-scale repeatable experiments in computer security. In our experiments, we evaluated DLP and reduced overhead dependent link padding (RO-DLP). Furthermore, We compared these schemes to a recently-proposed technique called selective grouping (SG) that aims to further reduce overhead from dummy packets in the padding algorithms at the cost of some anonymity. Through evaluations of the whole anonymity systems, we validated that RO-DLP could significantly reduce dummy packet overhead and enable larger number of users to be protected from timing analysis attacks in comparision to DLP implementation. We also showed that SG could practically reduce the network overhead with a lower ratio of dummy packets overhead reduction than the previous work proposed. We also deeply investigated the factors and causes to explain the lower ratio of reduction when we implemented SG on the real distributed networks. Furthermore, we performed the partial implementation of SG on some mix nodes with a circuit to compare the results with full implementation of SG. Finally, we showed that SG could enable larger numbers of users participated in the systems when compared with DLP and RO-DLP without SG.
Book Synopsis Cloud Storage Security by : Aaron Wheeler
Download or read book Cloud Storage Security written by Aaron Wheeler and published by Elsevier. This book was released on 2015-07-06 with total page 145 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cloud Storage Security: A Practical Guide introduces and discusses the risks associated with cloud-based data storage from a security and privacy perspective. Gain an in-depth understanding of the risks and benefits of cloud storage illustrated using a Use-Case methodology. The authors also provide a checklist that enables the user, as well as the enterprise practitioner to evaluate what security and privacy issues need to be considered when using the cloud to store personal and sensitive information. Describes the history and the evolving nature of cloud storage and security Explores the threats to privacy and security when using free social media applications that use cloud storage Covers legal issues and laws that govern privacy, compliance, and legal responsibility for enterprise users Provides guidelines and a security checklist for selecting a cloud-storage service provider Includes case studies and best practices for securing data in the cloud Discusses the future of cloud computing
Book Synopsis Privacy Enhancing Technologies by : Roger Dingledine
Download or read book Privacy Enhancing Technologies written by Roger Dingledine and published by Springer Science & Business Media. This book was released on 2003-12-03 with total page 231 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book constitutes the thoroughly refereed post-proceedings of the Third International Workshop on Privacy Enhancing Technologies, PET 2002, held in Dresden, Germany in March 2003. The 14 revised full papers presented were carefully selected from 52 submissions during two rounds of reviewing and improvement. Among the topics addressed are mix-networks, generalized mixes, unlinkability, traffic analysis prevention, face recognition, privacy legislation, Web censorship, anonymous networking, personalized Web-based systems, and privacy in enterprises.
Author :IEEE Computer Society. Technical Committee on Real-Time Systems Publisher :Institute of Electrical & Electronics Engineers(IEEE) ISBN 13 : Total Pages :316 pages Book Rating :4.:/5 (321 download)
Book Synopsis Preoceedings of the Fifth IEEE Real-Time Technology and Applications Symposium by : IEEE Computer Society. Technical Committee on Real-Time Systems
Download or read book Preoceedings of the Fifth IEEE Real-Time Technology and Applications Symposium written by IEEE Computer Society. Technical Committee on Real-Time Systems and published by Institute of Electrical & Electronics Engineers(IEEE). This book was released on 1999 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt: Contains papers from a June 1999 symposium, in sections on scheduling, languages and timing constraints, databases and operating systems, real-time Windows NT, real-time middleware, real-time communication, quality of service, and case studies. Subjects include design and performance of a real-time"
Book Synopsis Gossip Algorithms by : Devavrat Shah
Download or read book Gossip Algorithms written by Devavrat Shah and published by Now Publishers Inc. This book was released on 2009 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt: A systematic survey of many of these recent results on Gossip network algorithms.
Book Synopsis Distributed Computing by : Ajay D. Kshemkalyani
Download or read book Distributed Computing written by Ajay D. Kshemkalyani and published by Cambridge University Press. This book was released on 2011-03-03 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Designing distributed computing systems is a complex process requiring a solid understanding of the design problems and the theoretical and practical aspects of their solutions. This comprehensive textbook covers the fundamental principles and models underlying the theory, algorithms and systems aspects of distributed computing. Broad and detailed coverage of the theory is balanced with practical systems-related issues such as mutual exclusion, deadlock detection, authentication, and failure recovery. Algorithms are carefully selected, lucidly presented, and described without complex proofs. Simple explanations and illustrations are used to elucidate the algorithms. Important emerging topics such as peer-to-peer networks and network security are also considered. With vital algorithms, numerous illustrations, examples and homework problems, this textbook is suitable for advanced undergraduate and graduate students of electrical and computer engineering and computer science. Practitioners in data networking and sensor networks will also find this a valuable resource. Additional resources are available online at www.cambridge.org/9780521876346.
Book Synopsis Automating Open Source Intelligence by : Robert Layton
Download or read book Automating Open Source Intelligence written by Robert Layton and published by Syngress. This book was released on 2015-12-03 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt: Algorithms for Automating Open Source Intelligence (OSINT) presents information on the gathering of information and extraction of actionable intelligence from openly available sources, including news broadcasts, public repositories, and more recently, social media. As OSINT has applications in crime fighting, state-based intelligence, and social research, this book provides recent advances in text mining, web crawling, and other algorithms that have led to advances in methods that can largely automate this process. The book is beneficial to both practitioners and academic researchers, with discussions of the latest advances in applications, a coherent set of methods and processes for automating OSINT, and interdisciplinary perspectives on the key problems identified within each discipline. Drawing upon years of practical experience and using numerous examples, editors Robert Layton, Paul Watters, and a distinguished list of contributors discuss Evidence Accumulation Strategies for OSINT, Named Entity Resolution in Social Media, Analyzing Social Media Campaigns for Group Size Estimation, Surveys and qualitative techniques in OSINT, and Geospatial reasoning of open data. Presents a coherent set of methods and processes for automating OSINT Focuses on algorithms and applications allowing the practitioner to get up and running quickly Includes fully developed case studies on the digital underground and predicting crime through OSINT Discusses the ethical considerations when using publicly available online data
Book Synopsis Database Anonymization by : Josep Domingo-Ferrer
Download or read book Database Anonymization written by Josep Domingo-Ferrer and published by Morgan & Claypool Publishers. This book was released on 2016-01-01 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt: The current social and economic context increasingly demands open data to improve scientific research and decision making. However, when published data refer to individual respondents, disclosure risk limitation techniques must be implemented to anonymize the data and guarantee by design the fundamental right to privacy of the subjects the data refer to. Disclosure risk limitation has a long record in the statistical and computer science research communities, who have developed a variety of privacy-preserving solutions for data releases. This Synthesis Lecture provides a comprehensive overview of the fundamentals of privacy in data releases focusing on the computer science perspective. Specifically, we detail the privacy models, anonymization methods, and utility and risk metrics that have been proposed so far in the literature. Besides, as a more advanced topic, we identify and discuss in detail connections between several privacy models (i.e., how to accumulate the privacy guarantees they offer to achieve more robust protection and when such guarantees are equivalent or complementary); we also explore the links between anonymization methods and privacy models (how anonymization methods can be used to enforce privacy models and thereby offer ex ante privacy guarantees). These latter topics are relevant to researchers and advanced practitioners, who will gain a deeper understanding on the available data anonymization solutions and the privacy guarantees they can offer.
Book Synopsis Computer Networks by : Andrew S. Tanenbaum
Download or read book Computer Networks written by Andrew S. Tanenbaum and published by Prentice Hall. This book was released on 2019-02 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Computer Networks by : Andrew S. Tanenbaum
Download or read book Computer Networks written by Andrew S. Tanenbaum and published by . This book was released on 2011 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This edition reflects the latest networking technologies with a special emphasis on wireless networking, including 802.11, 802.16, Bluetooth, and 3G cellular, paired with fixed-network coverage of ADSL, Internet over cable, gigabit Ethernet, MPLS, and peer-to-peer networks. It incorporates new coverage on 3G mobile phone networks, Fiber to the Home, RFID, delay-tolerant networks, and 802.11 security, in addition to expanded material on Internet routing, multicasting, congestion control, quality of service, real-time transport, and content distribution.
Book Synopsis Modern B-Tree Techniques by : Goetz Graefe
Download or read book Modern B-Tree Techniques written by Goetz Graefe and published by Now Publishers Inc. This book was released on 2011 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt: Invented about 40 years ago and called ubiquitous less than 10 years later, B-tree indexes have been used in a wide variety of computing systems from handheld devices to mainframes and server farms. Over the years, many techniques have been added to the basic design in order to improve efficiency or to add functionality. Examples include separation of updates to structure or contents, utility operations such as non-logged yet transactional index creation, and robust query processing such as graceful degradation during index-to-index navigation. Modern B-Tree Techniques reviews the basics of B-trees and of B-tree indexes in databases, transactional techniques and query processing techniques related to B-trees, B-tree utilities essential for database operations, and many optimizations and improvements. It is intended both as a tutorial and as a reference, enabling researchers to compare index innovations with advanced B-tree techniques and enabling professionals to select features, functions, and tradeoffs most appropriate for their data management challenges.
Book Synopsis Computer Network Time Synchronization by : David L. Mills
Download or read book Computer Network Time Synchronization written by David L. Mills and published by CRC Press. This book was released on 2006-03-24 with total page 305 pages. Available in PDF, EPUB and Kindle. Book excerpt: What started with the sundial has, thus far, been refined to a level of precision based on atomic resonance: Time. Our obsession with time is evident in this continued scaling down to nanosecond resolution and beyond. But this obsession is not without warrant. Precision and time synchronization are critical in many applications, such as air traffic
Book Synopsis Applied Cryptography by : Bruce Schneier
Download or read book Applied Cryptography written by Bruce Schneier and published by John Wiley & Sons. This book was released on 2017-05-25 with total page 937 pages. Available in PDF, EPUB and Kindle. Book excerpt: From the world's most renowned security technologist, Bruce Schneier, this 20th Anniversary Edition is the most definitive reference on cryptography ever published and is the seminal work on cryptography. Cryptographic techniques have applications far beyond the obvious uses of encoding and decoding information. For developers who need to know about capabilities, such as digital signatures, that depend on cryptographic techniques, there's no better overview than Applied Cryptography, the definitive book on the subject. Bruce Schneier covers general classes of cryptographic protocols and then specific techniques, detailing the inner workings of real-world cryptographic algorithms including the Data Encryption Standard and RSA public-key cryptosystems. The book includes source-code listings and extensive advice on the practical aspects of cryptography implementation, such as the importance of generating truly random numbers and of keeping keys secure. ". . .the best introduction to cryptography I've ever seen. . . .The book the National Security Agency wanted never to be published. . . ." -Wired Magazine ". . .monumental . . . fascinating . . . comprehensive . . . the definitive work on cryptography for computer programmers . . ." -Dr. Dobb's Journal ". . .easily ranks as one of the most authoritative in its field." -PC Magazine The book details how programmers and electronic communications professionals can use cryptography-the technique of enciphering and deciphering messages-to maintain the privacy of computer data. It describes dozens of cryptography algorithms, gives practical advice on how to implement them into cryptographic software, and shows how they can be used to solve security problems. The book shows programmers who design computer applications, networks, and storage systems how they can build security into their software and systems. With a new Introduction by the author, this premium edition will be a keepsake for all those committed to computer and cyber security.
Book Synopsis Security and Privacy in the Age of Uncertainty by : Sabrina de Capitani di Vimercati
Download or read book Security and Privacy in the Age of Uncertainty written by Sabrina de Capitani di Vimercati and published by Springer. This book was released on 2013-06-29 with total page 509 pages. Available in PDF, EPUB and Kindle. Book excerpt: Security and Privacy in the Age of Uncertainty covers issues related to security and privacy of information in a wide range of applications including: *Secure Networks and Distributed Systems; *Secure Multicast Communication and Secure Mobile Networks; *Intrusion Prevention and Detection; *Access Control Policies and Models; *Security Protocols; *Security and Control of IT in Society. This volume contains the papers selected for presentation at the 18th International Conference on Information Security (SEC2003) and at the associated workshops. The conference and workshops were sponsored by the International Federation for Information Processing (IFIP) and held in Athens, Greece in May 2003.
Book Synopsis Cryptography for Developers by : Tom St Denis
Download or read book Cryptography for Developers written by Tom St Denis and published by Elsevier. This book was released on 2006-12-01 with total page 449 pages. Available in PDF, EPUB and Kindle. Book excerpt: The only guide for software developers who must learn and implement cryptography safely and cost effectively. Cryptography for Developers begins with a chapter that introduces the subject of cryptography to the reader. The second chapter discusses how to implement large integer arithmetic as required by RSA and ECC public key algorithms The subsequent chapters discuss the implementation of symmetric ciphers, one-way hashes, message authentication codes, combined authentication and encryption modes, public key cryptography and finally portable coding practices. Each chapter includes in-depth discussion on memory/size/speed performance trade-offs as well as what cryptographic problems are solved with the specific topics at hand. The author is the developer of the industry standard cryptographic suite of tools called LibTom A regular expert speaker at industry conferences and events on this development
Book Synopsis Cryptography and Network Security by : William Stallings
Download or read book Cryptography and Network Security written by William Stallings and published by Pearson. This book was released on 2016-02-18 with total page 772 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the eBook of the printed book and may not include any media, website access codes, or print supplements that may come packaged with the bound book. The Principles and Practice of Cryptography and Network Security Stallings’ Cryptography and Network Security, Seventh Edition, introduces the reader to the compelling and evolving field of cryptography and network security. In an age of viruses and hackers, electronic eavesdropping, and electronic fraud on a global scale, security is paramount. The purpose of this book is to provide a practical survey of both the principles and practice of cryptography and network security. In the first part of the book, the basic issues to be addressed by a network security capability are explored by providing a tutorial and survey of cryptography and network security technology. The latter part of the book deals with the practice of network security: practical applications that have been implemented and are in use to provide network security. The Seventh Edition streamlines subject matter with new and updated material — including Sage, one of the most important features of the book. Sage is an open-source, multiplatform, freeware package that implements a very powerful, flexible, and easily learned mathematics and computer algebra system. It provides hands-on experience with cryptographic algorithms and supporting homework assignments. With Sage, the reader learns a powerful tool that can be used for virtually any mathematical application. The book also provides an unparalleled degree of support for the reader to ensure a successful learning experience.
