Preventing Encrypted Traffic Analysis
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Preventing Encrypted Traffic Analysis
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Author : Nabil A. Schear
language : en
Publisher:
Release Date : 2011
Preventing Encrypted Traffic Analysis written by Nabil A. Schear and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011 with categories.
Many existing encrypted Internet protocols leak information through packet sizes and timing. Though seemingly innocuous, prior work has shown that such leakage can be used to recover part or all of the plaintext being encrypted. The prevalence of encrypted protocols as the underpinning of such critical services as e-commerce, remote login, and anonymity networks and the increasing feasibility of attacks on these services represent a considerable risk to communications security. Existing mechanisms for preventing traffic analysis focus on re-routing and padding. These prevention techniques have considerable resource and overhead requirements. Furthermore, padding is easily detectable and, in some cases, can introduce its own vulnerabilities. To address these shortcomings, we propose embedding real traffic in synthetically generated encrypted cover traffic. Novel to our approach is our use of realistic network protocol behavior models to generate cover traffic. The observable traffic we generate also has the benefit of being indistinguishable from other real encrypted traffic further thwarting an adversary's ability to target attacks. In this dissertation, we introduce the design of a proxy system called TrafficMimic that implements realistic cover traffic tunneling and can be used alone or integrated with the Tor anonymity system. We describe the cover traffic generation process including the subtleties of implementing a secure traffic generator. We show that TrafficMimic cover traffic can fool a complex protocol classification attack with 91% of the accuracy of real traffic. TrafficMimic cover traffic is also not detected by a binary classification attack specifically designed to detect TrafficMimic. We evaluate the performance of tunneling with independent cover traffic models and find that they are comparable, and, in some cases, more efficient than generic constant-rate defenses. We then use simulation and analytic modeling to understand the performance of cover traffic tunneling more deeply. We find that we can take measurements from real or simulated traffic with no tunneling and use them to estimate parameters for an accurate analytic model of the performance impact of cover traffic tunneling. Once validated, we use this model to better understand how delay, bandwidth, tunnel slowdown, and stability affect cover traffic tunneling. Finally, we take the insights from our simulation study and develop several biasing techniques that we can use to match the cover traffic to the real traffic while simultaneously bounding external information leakage. We study these bias methods using simulation and evaluate their security using a Bayesian inference attack. We find that we can safely improve performance with biasing while preventing both traffic analysis and defense detection attacks. We then apply these biasing methods to the real TrafficMimic implementation and evaluate it on the Internet. We find that biasing can provide 3-5x improvement in bandwidth for bulk transfers and 2.5-9.5x speedup for Web browsing over tunneling without biasing.
Encrypted Network Traffic Analysis
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Author : Aswani Kumar Cherukuri
language : en
Publisher: Springer Nature
Release Date :
Encrypted Network Traffic Analysis written by Aswani Kumar Cherukuri and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on with categories.
Privacy Analysis Of The Internet Protocol
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Author :
language : en
Publisher:
Release Date : 2002
Privacy Analysis Of The Internet Protocol written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2002 with categories.
The motivating problem for this research is the situation in which a group of US military facilities exchange encrypted communication over public networks. The traffic flow on such networks can be a source of covert information flow to eavesdroppers that monitor the public networks. Even simple measurements of the quantity of traffic arriving at a remote location can be indicative of imminent activity at that site. More sophisticated traffic analysis has been used to compromise passwords in the secure shell protocol SonO 1. The potential information leakage from network traffic is similar to the covert information channels between security levels in a multilevel operating system. The simplest solution to this problem is to deploy a fully secure, private network, thus preventing any illicit access to the network traffic. This solution is indeed used for highly classified communications, but it is too expense to deploy for the large volume of sensitive but unclassified information that directs most DoD activity today. This project focused on designing a standards-based approach to providing traffic flow confidential (TFC), TFC is the protection of traffic flow patterns against adversary analysis that identifies communicating parties and draws inferences about the communication based on publicly assessable traffic characteristics.
Enhancing Cybersecurity With Encrypted Traffic Fingerprinting
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Author : Khaled Mohammed Al-Naami
language : en
Publisher:
Release Date : 2017
Enhancing Cybersecurity With Encrypted Traffic Fingerprinting written by Khaled Mohammed Al-Naami and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017 with Computer security categories.
Recently, network traffic analysis and cyber deception have been increasingly used in various applications to protect people, information, and systems from major cyber threats. Network traffic fingerprinting is a traffic analysis attack which threatens web navigation privacy. It is a set of techniques used to discover patterns from a sequence of network packets generated while a user accesses different websites. Internet users (such as online activists or journalists) may wish to hide their identity and online activity to protect their privacy. Typically, an anonymity network is utilized for this purpose. These anonymity networks such as Tor (The Onion Router) provide layers of data encryption which poses a challenge to the traffic analysis techniques. Traffic fingerprinting studies have employed various traffic analysis and statistical techniques over anonymity networks. Most studies use a similar set of features including packet size, packet direction, total count of packets, and other summaries of different packets. More-over, various defense mechanisms have been proposed to counteract these feature selection processes, thereby reducing prediction accuracy. In this dissertation, we address the aforementioned challenges and present a novel method to extract characteristics from encrypted traffic by utilizing data dependencies that occur over sequential transmissions of network packets. In addition, we explore the temporal nature of encrypted traffic and introduce an adaptive model that considers changes in data content over time. We not only consider traditional learning techniques for prediction, but also use semantic vector space models (VSMs) of language where each word (packet) is represented as a real-valued vector. We also introduce a novel defense algorithm to counter the traffic fingerprinting attack. The defense uses sampling and mathematical optimization techniques to morph packet sequences and destroy traffic flow dependency patterns. Cyber deception has been shown to be a key ingredient in cyber warfare. Cyber security deception is the methodology followed by an organization to lure the adversary into a controlled and transparent environment for the purpose of protecting the organization, disinforming the attacker, and discovering zero-day threats. We extend our traffic fingerprinting work to the cyber deception domain and leverage recent advances in software deception to enhance Intrusion Detection Systems by feeding back attack traces into machine learning classifiers. We present a feature-rich attack classification approach to extract security-relevant network-and system-level characteristics from production servers hosting enterprise web applications.
Trends In Data Protection And Encryption Technologies
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Author : Valentin Mulder
language : en
Publisher: Springer Nature
Release Date : 2023-07-31
Trends In Data Protection And Encryption Technologies written by Valentin Mulder and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2023-07-31 with Computers categories.
This open access book reports the results of a study conducted in Switzerland in 2022 to provide an overview of the changing landscape of encryption and data protection technologies and their global usage trends. The Swiss Confederation tasked the Cyber-Defence Campus (CYD Campus) to identify the 38 most relevant encryption and data protection technologies, analyze their expected evolution until 2025, and derive implications for the military, civil society, and economy sectors. Fifty experts from academia, government, and industry have contributed to this study and provided their viewpoints on the different technologies and trends. This comprehensive collection of factsheets provides a reference for organizations and individuals that need to elaborate coherent and efficient data protection and encryption strategies in the coming years. The 38 technologies have been sorted into five categories. First, encryption foundations represent the technologies used to create other encryption applications. Second, low-level applications represent the technologies that focus on micro functionalities. Third, high-level applications represent the technologies that focus on more abstract and macro functionalities. Fourth, data protection represents the technologies used to protect data without encrypting these data. Finally, use cases represent concrete ways the different technologies can be used together to create a working solution. The book serves as a guide for decision-making within administrations, government organizations, and industry. It will also be interesting for the tech-savvy board member or engineers looking to get an entry point into data protection topics. Last not least, the book will also be a valuable reading for anyone interested in data protection and encryption.
Cryptography And Public Key Infrastructure On The Internet
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Author : Klaus Schmeh
language : en
Publisher: John Wiley & Sons
Release Date : 2006-01-04
Cryptography And Public Key Infrastructure On The Internet written by Klaus Schmeh and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006-01-04 with Computers categories.
A practical guide to Cryptography and its use in the Internet and other communication networks. This overview takes the reader through basic issues and on to more advanced concepts, to cover all levels of interest. Coverage includes all key mathematical concepts, standardisation, authentication, elliptic curve cryptography, and algorithm modes and protocols (including SSL, TLS, IPSec, SMIME, & PGP protocols). * Details what the risks on the internet are and how cryptography can help * Includes a chapter on interception which is unique amongst competing books in this field * Explains Public Key Infrastructures (PKIs) - currently the most important issue when using cryptography in a large organisation * Includes up-to-date referencing of people, organisations, books and Web sites and the latest information about recent acts and standards affecting encryption practice * Tackles the practical issues such as the difference between SSL and IPSec, which companies are active on the market and where to get further information
Intrusion Detection And Prevention For Mobile Ecosystems
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Author : Georgios Kambourakis
language : en
Publisher: CRC Press
Release Date : 2017-09-06
Intrusion Detection And Prevention For Mobile Ecosystems written by Georgios Kambourakis and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-09-06 with Computers categories.
This book presents state-of-the-art contributions from both scientists and practitioners working in intrusion detection and prevention for mobile networks, services, and devices. It covers fundamental theory, techniques, applications, as well as practical experiences concerning intrusion detection and prevention for the mobile ecosystem. It also includes surveys, simulations, practical results and case studies.
Cissp Rapid Review
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Author : Darril Gibson
language : en
Publisher: Pearson Education
Release Date : 2012-12-15
Cissp Rapid Review written by Darril Gibson and has been published by Pearson Education this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-15 with Computers categories.
Assess your readiness for the CISSP Exam—and quickly identify where you need to focus and practice. This practical, streamlined guide provides objective overviews, exam tips, "need-to-know" checklists, review questions, and a list of valuable resources—all designed to help evaluate and reinforce your preparation. Bolster your exam prep with a Rapid Review of these objectives: Information Security Governance and Risk Management Access Control Cryptography Physical (Environmental) Security Security Architecture and Design Legal, Regulations, Investigations and Compliance Telecommunications and Network Security Business Continuity and Disaster Recovery Planning Software Development Security Security Operations This book is an ideal complement to the in-depth training of the Microsoft Press 2-in-1 Training Kit for the CISSP Exam and other exam-prep resources.
Internet Of Things Smart Spaces And Next Generation Networks And Systems
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Author : Olga Galinina
language : en
Publisher: Springer
Release Date : 2016-09-19
Internet Of Things Smart Spaces And Next Generation Networks And Systems written by Olga Galinina and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-09-19 with Computers categories.
This book constitutes the joint refereed proceedings of the 16th International Conference on Next Generation Wired/Wireless Advanced Networks and Systems, NEW2AN 2016, and the 9th Conference on Internet of Things and Smart Spaces, ruSMART 2016, held in St. Petersburg, Russia, in September 2016. The 69 revised full papers were carefully reviewed and selected from 204 submissions. The 12 papers selected for ruSMART are organized in topical sections on new generation of smart services; smart services serving telecommunication networks; role of context for smart services; and smart services in automotive industry. The 57 papers from NEW2AN deal with the following topics: cooperative communications; wireless networks; wireless sensor networks; security issues; IoT and industrial IoT; NoC and positioning; ITS; network issues; SDN; satellite communications; signals and circuits; advanced materials and their properties; and economics and business.
Handbook Of Information Security Information Warfare Social Legal And International Issues And Security Foundations
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Author : Hossein Bidgoli
language : en
Publisher: John Wiley & Sons
Release Date : 2006-03-10
Handbook Of Information Security Information Warfare Social Legal And International Issues And Security Foundations written by Hossein Bidgoli and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006-03-10 with Business & Economics categories.
The Handbook of Information Security is a definitive 3-volume handbook that offers coverage of both established and cutting-edge theories and developments on information and computer security. The text contains 180 articles from over 200 leading experts, providing the benchmark resource for information security, network security, information privacy, and information warfare.