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检索条件"机构=Cyber Security in Computer Science and Engineering"

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CDCAS: A Novel Cloud Data Center security Auditing System

CDCAS: A Novel Cloud Data Center Security Auditing System

引用

IEEE International Conference on Services Computing (SCC)

作者： Xueying Wang Jun Zhang Mingbo Wang Lijun Zu Zhihui Lu Jie Wu School of Computer Science Fudan University China UnionPay Research Institute of Electronic Payment Shanghai China Auditing and Monitoring Engineering Research Center of Cyber Security Shanghai China

With the increasing acceptance of cloud data center and virtualization technology by enterprises and industries, the security concern becomes the key hindrance to the development and deployment of cloud computing. security auditing is a good way to deal with the threats faced by a cloud data center. But traditional auditing is no longer suitable for the new cloud environment. In this paper, we design, implement and evaluate the CDCAS, a novel cloud data center auditing system, which matches the demand of the scalability and efficiency of a cloud data center. In this system, we design one distributed and autonomous agent model which can be controlled by a set of rules dynamically generated to fit its use scenario. We then build the log analysis model which uses the signature based method and correlative analysis algorithm to extract security events from collected log with agreeable false positives. We evaluate our system both on real world and simulation to validate its efficiency. And our system is also deployed by the cloud data center of a well-known financial institution, and performs well.

关键词： security Cloud computing Servers Transforms Algorithm design and analysis Distributed databases

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Implementing a novel load-aware auto scale scheme for private cloud resource management platform

Implementing a novel load-aware auto scale scheme for privat...

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IEEE Symposium on Network Operations and Management

作者： Jie Bao Zhihui Lu Jie Wu Shiyong Zhang Yiping Zhong School of Computer Science Fudan University Shanghai China Fudan University Shanghai Shanghai CN Engineering Research Center of Cyber Security Auditing and Monitoring Ministry of Education Shanghai China

Resources dynamical allocation and management is always an important feature in cloud computing. Auto Scale allows users to scale their cloud resources capacity according to elastic loads timely, which has been widely used in mature public cloud. For private cloud, there are some different features from public cloud. It is more flexible to use Auto Scale technique to provide QoS guarantees and ensure system health. In this paper, we design a novel Auto Load-aware Scale scheme for private cloud environment. We describe scale in and scale out strategy based on prediction algorithm. We implement our scheme on OpenStack platform. Both simulation and experiments are carried out to evaluate our work. The experiments show that our scheme has better performance in resource utilization while providing high SLA levels.

关键词： Cloud computing Virtual machining Measurement Monitoring Prediction algorithms Servers Resource management

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Improvement of timing reliability and data transfer security of synchrophasor measurements

Improvement of timing reliability and data transfer security...

引用

IEEE PES Transmission and Distribution Conference and Exposition

作者： L. Zhan D. Zhou T. King Y. Liu E. Johannessen J. Alexander B. Boza Dept. of Electrical Engineering and Computer Science University of Tennessee Knoxville USA Low Frequency Systems UrsaNav Inc Bedford USA Business Development Scout Industries LLC - Scout Cyber Security Knoxville USA

Synchronized phasor measurements are becoming one of the key measurement elements of wide area measurement systems in advanced power system monitoring, protection, and control applications. Availability of global positioning system (GPS) provides the possibility of wide-area deployment of Phasor Measurement Unit (PMU) and Frequency Disturbance Recorder (FDR) in power system. GPS is the only timing source for PMU and FDR so far, and they will cease to work when GPS signal is lost or unstable. In addition, phasor data is transferred over the Internet without any encryption, which exposes data to cyber-attacks. The purpose of this paper is to develop an alternative GPS independent timing synchronization method for PMU and FDR, and to implement an encryption system without disrupting real-time data delivery. Primary test results confirm improvement of timing reliability and data transfer security of synchrophasor measurements.

关键词： Encryption Global Positioning System Phasor measurement units Frequency measurement Synchronization Servers

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Applying data mining to improve faculty evaluation for educational organizations

Applying data mining to improve faculty evaluation for educa...

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2014 International Conference on engineering Technology And Applications(ICETA2014)

作者： Wen Si Rong Tan Jian Wang Hongmei Liu Jianye Li College of Information and Computer Science Shanghai Business School Cyber Physical System R&D Center The Third Research Institute of Ministry of Public Security School of Electronic Information and Electrical Engineering Shanghai Jiao Tong University Donghua University The Third Research Institute of Ministry of Public Security

One of the challenges of educational organization improvement is to manage talented teachers effectively,*** assign the right teacher for given *** providing scientific performance evaluation,some factors related to a teacher,such as age,experience,professional,*** play important ***,it is crucial to find the underlying associations between teachers' personal information and their working *** this paper,data mining technique is employed to improve the faculty *** algorithm called Quick Apriori,which is based on the classic Apriori algorithm,is *** results not only provide the decision rules related to personal characteristics with working performance,but also show that the obtained rules are consonant with existing experience.

关键词： data mining knowledge management Quick Apriori algorithm human resource management talented management

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A privacy protection model for location-based social networking services

A privacy protection model for location-based social network...

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2014 International Conference on engineering Technology And Applications(ICETA2014)

作者： Rong Tan Wen Si Jian Wang College of Information and Computer Science Shanghai Business School Cyber Physical System R&D Center The Third Research Institute of Ministry of Public Security School of Electronic Information and Electrical Engineering Shanghai Jiao Tong University

Since the location-based social networking services emerged,the location privacy issue has gained widespread concerns from consumers and *** the location history plays an important role in knowledge discovery,many people worry that their privacy will be disclosed *** this paper,we introduce a spatial-temporal cloaking model which follows the k-anonymity principle to protect the location *** corresponding algorithm which can find a minimum cloaking 3D box covering the actual location and its temporal information is proposed as ***,the algorithm is able to prevent the modeled records against the continuous attacks which infer the actual location by computing the overlapping spatial *** experimental results show that the proposed algorithm has a high efficiency.

关键词： privacy model location privacy protection privacy protection mobile computing location-based social networking services location-based services

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Practice of PBL in the Reading Teaching Strategies

Practice of PBL in the Reading Teaching Strategies

引用

2014 International Conference on Information Technology and Career Education

作者： Yingting Wang Jian Wang Hao Sheng Nanjing Yuying Foreign Language School Cyber Physical System R&D Center The Third Research Institute of Ministry of Public Security School of Electronic Information and Electrical Engineering Shanghai Jiao Tong University School of Computer Science and Engineering Beihang University

Combined PBL with some advanced foreign reading teaching strategies,we choose the most suitable way to give lessons and bring up students ability to think of *** on teaching experience for several years,we propose some teaching strategies in English reading teaching to help students improve the efficiency and accuracy of reading with the help of *** practice,students'innovation and cooperation are strengthened and the width and depth of their questions are improved.

关键词： PBL problem-based learning reading teaching strategies

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S2Logger: End-to-End Data Tracking Mechanism for Cloud Data Provenance

S2Logger: End-to-End Data Tracking Mechanism for Cloud Data ...

引用

12th IEEE International Conference on Trust, security and Privacy in Computing and Communications (TrustCom)

作者： Suen, Chun Hui Ko, Ryan K. L. Tan, Yu Shyang Jagadpramana, Peter Lee, Bu Sung Cyber Security Lab Department of Computer Science University of Waikato Hamilton New Zealand School of Computer Engineering Nanyang Technological University Singapore

ISBN: (纸本)9780769550220

The inability to effectively track data in cloud computing environments is becoming one of the top concerns for cloud stakeholders. This inability is due to two main reasons. Firstly, the lack of data tracking tools built for clouds. Secondly, current logging mechanisms are only designed from a system-centric perspective. There is a need for data-centric logging techniques which can trace data activities (e. g. file creation, edition, duplication, transfers, deletions, etc.) within and across all cloud servers. This will effectively enable full transparency and accountability for data movements in the cloud. In this paper, we introduce S2Logger, a data event logging mechanism which captures, analyses and visualizes data events in the cloud from the data point of view. By linking together atomic data events captured at both file and block level, the resulting sequence of data events depicts the cloud data provenance records throughout the data lifecycle. With this information, we can then detect critical data-related cloud security problems such as malicious actions, data leakages and data policy violations by analysing the data provenance. S2Logger also enables us to address the gaps and inadequacies of existing system-centric security tools.

关键词： Cloud Computing Cloud data provenance data tracking file tracking data tracing cloud computing security accountability in cloud computing cloud computing transparency S2Logger

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Compact and unified hardware architecture for SHA-1 and SHA-256 of trusted mobile computing

Compact and unified hardware architecture for SHA-1 and SHA-...

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作者： Kim, Mooseop Lee, Deok Gyu Ryou, Jaecheol Cyber Security-Convergence Research Department ETRI Daejeon Korea Republic of Division of Computer Science and Engineering Chungnam National University Daejeon Korea Republic of

This paper presents a compact and unified hardware architecture implementing SHA-1 and SHA-256 algorithms that is suitable for the mobile trusted module (MTM), which should satisfy small area and low-power condition. The built-in hardware hash engine in a MTM is one of the most important circuit blocks and dominates the performance of the whole platform because it is used as a key primitive to support most MTM commands concerning to the platform integrity and the command authentication. Unlike the general trusted platform module (TPM) for PCs, the MTM, that is to be employed in mobile devices, has very stringent limitations with respect to available power, circuit area, and so on. Therefore, MTM needs the spatially optimized architecture and design method for the construction of a compact SHA hardware. The proposed hardware for unified SHA-1 and SHA-256 component can compute a sequence of 512-bit data blocks and has been implemented into 12,400 gates of 0.25 μm CMOS process. Furthermore, in the processing speed and power consumption, it shows the better performance in comparison with commercial TPM chips and software-only implementation. The highest operation frequency and throughput of the proposed architecture are 137 MHz and 197.6 Mbps, respectively, which satisfy the processing requirement for the mobile application. © 2012 Springer-Verlag London Limited.

关键词： Mobile computing

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Attack on recent homomorphic encryption scheme over integers

Attack on recent homomorphic encryption scheme over integers

引用

FTRA 7th International Conference on Multimedia and Ubiquitous engineering, MUE 2013

作者： Yang, Haomiao Kim, Hyunsung Tang, Dianhua College of Computer Science and Engineering UEST of China Chengdu 610054 China Department of Cyber Security Kyungil University Kyungpook Kyungsansi 712-701 Korea Republic of Science and Technology on Communication Security Laboratory Chengdu 610041 China

ISBN: (纸本)9789400767379

At CDCIEM 2012, Yang et al. proposed a new construction of somewhat homomorphic encryption scheme over integers, which is quite efficient in the perspective of the key size. In this paper, we present an effective lattice reduction attack on Yang et al.'s scheme, where it is easy to recover the plaintext by applying LLL algorithm. © 2013 Springer science+Business Media Dordrecht(Outside the USA).

关键词： Cryptography

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A framework for risk-aware role based access control

A framework for risk-aware role based access control

引用

IEEE Conference on Communications and Network security (CNS)

作者： Khalid Zaman Bijon Ram Krishnan Ravi Sandhu Department of Computer Science Institute for Cyber Security Department of Electrical and Computer Engineering University of Texas at San Antonio

Over the years, role based access control (RBAC) has remained a dominant form of access control both in the industry and academia. More recently, the need for risk awareness in access control has received considerable attention in the research community in light of issues such as insider threats. Although RBAC facilitates risk mitigation via features such as constraints (e.g. static and dynamic separation of duty), a quantified approach of risk awareness/mitigation has emerged as a promising research theme due to its inherent flexibility. In this approach, risk/cost metrics are computed for various entities involved in access control such as users and objects and a risk threshold limits the permissions that can be exercised. The quantified approach accommodates dynamism in access decisions based on contexts/situations such as an employee accessing a sensitive file using a work computer versus accessing using her own device. In this paper, we analyze the difference between the traditional constraint-based risk mitigation and the recent quantified risk-aware approaches in RBAC and propose a framework for introducing risk-awareness in RBAC models that incorporates quantified-risk. We also provide a formal specification of an adaptive risk-aware RBAC model by enhancing the NIST core RBAC model.

关键词： Access control Adaptation models Estimation NIST Monitoring Automation

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