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检索条件"任意字段=Proceedings of the Eighth ACM Conference on Data and Application Security and Privacy"

共 561 条记录，以下是371-380 订阅

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Information sharing and user privacy in the third-party identity management landscape 15

Information sharing and user privacy in the third-party iden...

引用

5th acm conference on data and application security and privacy, CODASPY 2015

作者： Vapen, Anna Carlsson, Niklas Mahanti, Anirban Shahmehri, Nahid Linköping University Sweden NICTA Australia

ISBN: (纸本)9781450331913

Third-party identity management services enable cross-site information sharing, making Web access seamless but also raise significant privacy implications for the users. Using a combination of manual analysis of identified third-party identity management relationships and targeted case stud- ies we capture how the protocol usage and third-party se- lection is changing, profile what information is requested to be shared (and actions to be performed) between web- sites, and identify privacy issues and practical problems that occur when using multiple accounts (associated with these services). The study highlights differences in the privacy leakage risks associated with different classes of websites, and shows that the use of multiple third-party websites, in many cases, can cause the user to lose (at least) partial con- trol over which information is shared/posted on their behalf. Copyright © 2015 acm.

关键词： Websites

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privacy-preserving scanning of big content for sensitive data exposure with mapreduce 15

Privacy-preserving scanning of big content for sensitive dat...

引用

5th acm conference on data and application security and privacy, CODASPY 2015

作者： Liu, Fang Shu, Xiaokui Yao, Danfeng Daphne Butt, Ali R. Department Computer Science Virginia Tech BlacksburgVA United States

ISBN: (纸本)9781450331913

The exposure of sensitive data in storage and transmission poses a serious threat to organizational and personal secu- rity. data leak detection aims at scanning content (in stor- age or transmission) for exposed sensitive data. Because of the large content and data volume, such a screening algo- rithm needs to be scalable for a timely detection. Our solu- tion uses the MapReduce framework for detecting exposed sensitive content, because it has the ability to arbitrarily scale and utilize public resources for the task, such as Ama- zon EC2. We design new MapReduce algorithms for com- puting collection intersection for data leak detection. Our prototype implemented with the Hadoop system achieves 225 Mbps analysis throughput with 24 nodes. Our algo- rithms support a useful privacy-preserving data transfor- mation. This transformation enables the privacy-preserving technique to minimize the exposure of sensitive data during the detection. This transformation supports the secure out- sourcing of the data leak detection to untrusted MapReduce and cloud providers. Copyright © 2015 acm.

关键词： MapReduce

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Secure information and resource sharing in cloud 15

Secure information and resource sharing in cloud

引用

5th acm conference on data and application security and privacy, CODASPY 2015

作者： Zhang, Yun Krishnan, Ram Sandhu, Ravi Institute for Cyber Security Univ of Texas at San Antonio San AntonioTX78249 United States Dept. of Electrical and Computer Engineering Univ of Texas at San Antonio San AntonioTX78249 United States

ISBN: (纸本)9781450331913

The significant threats from information security breaches in cyber world is one of the most serious security problems. Organizations are facing growing number of sophisticated cyber-attacks every year. Efficient and secure sharing of at- tack and security information during cyber incident response plays increasingly significant role in fixing the problems as well as helping organizations recover fast. While traditional systems are slow and inefficient in sharing information and resources securely, cloud platform provides us a consider- able convenience to facilitate the sharing. In this paper, we propose access control models for secure information and re- source sharing (IARS) in cloud Infrastructure as a Service (IaaS). Copyright © 2015 acm.

关键词： Infrastructure as a service (IaaS)

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Combining ORAM with PIR to minimize bandwidth costs 15

Combining ORAM with PIR to minimize bandwidth costs

引用

5th acm conference on data and application security and privacy, CODASPY 2015

作者： Dautrich, Jonathan Ravishankar, Chinya Google Inc. IrvineCA United States Computer Science and Engineering University of California Riverside United States

ISBN: (纸本)9781450331913

Cloud computing allows customers to outsource the burden of data management and benefit from economy of scale, but privacy concerns limit its reach. Even if the stored data are encrypted, access patterns may leak valuable information. Oblivious RAM (ORAM) protocols guarantee full access pattern privacy, but even the most efficient ORAMs proposed to date incur large bandwidth costs. We combine Private Information Retrieval (PIR) techniques with the most bandwidth-efficient existing ORAM scheme known to date (ObliviStore), to create OS+PIR, a new ORAM with bandwidth costs only half those of ObliviStore. For data block counts ranging from 220 to 230, OS+PIR achieves a total bandwidth cost of only 11X-13X blocks transferred per client block read+write, down from Oblivi- Store's 18X-26X. OS+PIR introduces several enhancements in addition to PIR in order to achieve its lower costs, including mechanisms for eliminating unused dummy blocks. Copyright © 2015 acm.

关键词： data privacy

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An Approach to Designing a Network security-based application for Communications Safety

An Approach to Designing a Network Security-based Applicatio...

引用

IEEE/acm International conference on Advances in Social Networks Analysis and Mining (ASONAM)

作者： Bruce, Ndibanje Kang, Young Jin Sain, Mangal Lee, Hoon Jae Dongseo Univ Grad Sch Dept Ubiquitous IT Busan 617716 South Korea Dongseo Univ Div Comp & Engn Busan 617716 South Korea

ISBN: (纸本)9781450338547

The evolution of digital communication includes both applications and devices running them. In this context, specific applications are needed to enhance a safeguard communication ensuring protection and trust services to the users. The growing need to address privacy concerns when social network data is released for mining purposes has recently led to considerable interest in various network security-based applications. In this paper, we develop an efficiency and adaptive network security-based application to ensure the privacy and data integrity across channel communications. This approach is designed on a model of clustering configuration of the involved members. The cluster members interact with the cluster leader for data exchange and sends to the base station. This scheme provides a strong mutual authentication framework that suits for real heterogeneous wireless applications. In addition, we contribute with a mathematical analysis to the delay and optimization analysis in a clustering topology node-based, also we compared the scheme with existing ones using security standards services. Finally, performance of this scheme is evaluated in term of computation and communication overhead;results show the present framework is efficiency and can be safeguard for Network security-based applications.

关键词： network security applications algorithms protocols mutual authentication

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SemaDroid: A privacy-aware sensor management framework for smartphones 15

SemaDroid: A privacy-aware sensor management framework for s...

引用

5th acm conference on data and application security and privacy, CODASPY 2015

作者： Xu, Zhi Zhu, Sencun Pennsylvania State University University ParkPA United States

ISBN: (纸本)9781450331913

While mobile sensing applications are booming, the sensor man- agement mechanisms in current smartphone operating systems are left behind - they are incomprehensive and coarse-grained, expos- ing a huge attack surface for malicious or aggressive third party apps to steal user's private information through mobile sensors. In this paper, we propose a privacy-aware sensor management framework, called SemaDroid, which extends the existing sensor management framework on Android to provide comprehensive and fine-grained access control over onboard sensors. SemaDroid al- lows the user to monitor the sensor usage of installed apps, and to control the disclosure of sensing information while not affect- ing the app's usability. Furthermore, SemaDroid supports context- aware and quality-of-sensing based access control policies. The en- forcement and update of the policies are in real-time. Detailed de- sign and implementation of SemaDroid on Android are presented to show that SemaDroid works compatible with the existing An- droid security framework. Demonstrations are also given to show the capability of SemaDroid on sensor management and on defeat- ing emerging sensor-based attacks. Finally, we show the high effi- ciency and security of SemaDroid. Copyright © 2015 acm.

关键词： Smartphones

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Rapid screening of transformed data leaks with efficient algorithms and parallel computing 15

Rapid screening of transformed data leaks with efficient alg...

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5th acm conference on data and application security and privacy, CODASPY 2015

作者： Shu, Xiaokui Zhang, Jing Yao, Danfeng Daphne Feng, Wu-Chun Department of Computer Science Virginia Tech BlacksburgVA United States

ISBN: (纸本)9781450331913

The leak of sensitive data on computer systems poses a seri- ous threat to organizational security. Organizations need to identify the exposure of sensitive data by screening the con- tent in storage and transmission, i.e., to detect sensitive in- formation being stored or transmitted in the clear. However, detecting the exposure of sensitive information is challenging due to data transformation in the content. Transformations (such as insertion, deletion) result in highly unpredictable leak patterns. Existing automata-based string matching algorithms are impractical for detecting transformed data leaks, because of its formidable complexity when model- ing the required regular expressions. We design two new algorithms for detecting long and transformed data leaks. Our system achieves high detection accuracy in recogniz- ing transformed leaks compared to the state-of-the-art in- spection methods. We parallelize our prototype on graphics processing unit and demonstrate the strong scalability of our detection solution required by a sizable organization. Copyright © 2015 acm.

关键词： Sensitive data

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CryptStream: Cryptographic access controls for streaming data 15

CryptStream: Cryptographic access controls for streaming dat...

引用

5th acm conference on data and application security and privacy, CODASPY 2015

作者： Thoma, Cory Lee, Adam J. Labrinidis, Alexandros University of Pittsburgh PittsburghPA15260 United States

ISBN: (纸本)9781450331913

With data becoming available in larger quantities and at higher rates, new data processing paradigms have been pro- posed to handle large and fast data. data Stream Processing is one such paradigm wherein transient data ows as streams through sets of continuous queries, only returning results when data is of interest to the querier, allowing uninterest- ing data to be ignored. To process these data streams, users are employing third party computational platforms or large private platforms to reduce the individual cost for querying and computing over data streams. Utilizing third parties for outsourcing computation means data being processed is available to the third party as well, which could violate the data provider's privacy. There has been research done into access control for streaming data, and these works provide a good first step, but fall short of a complete system. In this paper, we introduce CryptStream for cryptographically enforcing access controls over streaming data. CryptStream combines data providers access control policies with ones prescribed by the data consumer and the server as well. We show that CryptStream improves over earlier work in the same design space while providing smaller overheads and more flexibility. Copyright © 2015 acm.

关键词： Access control

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DEMO: NFCGate - An NFC relay application for android 8

DEMO: NFCGate - An NFC relay application for android

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8th acm conference on security and privacy in Wireless and Mobile Networks, WiSec 2015

作者： Maass, Max Müller, Uwe Schons, Tom Wegemer, Daniel Schulz, Matthias Secure Mobile Networking Lab. Technische Universität Darmstadt Darmstadt Germany

ISBN: (纸本)9781450336239

Near Field Communication (NFC) is a technology widely used for security-critical applications like access control or payment systems. Many of these systems rely on the security assumption that the card has to be in close proximity to communicate with the reader. We developed NFCGate, an Android application capable of relaying NFC communication between card and reader using two rooted but otherwise unmodified Android phones. This enables us to increase the distance between card and reader, eavesdrop on, and even modify the exchanged data. The application should work for any system built on top of ISO 14443-3 that is not hardened against relay attacks, and was successfully tested with a popular contactless card payment system and an electronic passport document.

关键词： Android Near Field Communication Relay attack

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CODASPY 2014 - proceedings of the 4th acm conference on data and application security and privacy

CODASPY 2014 - Proceedings of the 4th ACM Conference on Data...

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4th acm conference on data and application security and privacy, CODASPY 2014

ISBN: (纸本)9781450322782

The proceedings contain 41 papers. The topics discussed include: on the suitability of dissemination-centric access control systems for group-centric sharing;Streamforce: outsourcing access control enforcement for stream data to the clouds;automated black-box detection of access control vulnerabilities in web applications;PhishSafe: leveraging modern Javascript API's for transparent and robust protection;COMPARS: toward an empirical approach for comparing the resilience of reputation systems;situational awareness through reasoning on network incidents;measuring the robustness of source program obfuscation: studying the impact of compiler optimizations on the obfuscation of C programs;interaction provenance model for unified authentication factors in service oriented computing;POSTER: a pairing-free certificateless hybrid signcryption scheme for advanced metering infrastructures;and DIVILAR: diversifying intermediate language for anti-repackaging on Android platform.

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