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Articles 571 - 600 of 654

Full-Text Articles in Physical Sciences and Mathematics

Oil. Changing Geopolitics Of Oil In Asia & The Usa, Jay Hein, John Clark, Robert Ebel, Dong Hyung Cha, Richard Lotspeich Jul 2007

Oil. Changing Geopolitics Of Oil In Asia & The Usa, Jay Hein, John Clark, Robert Ebel, Dong Hyung Cha, Richard Lotspeich

New England Journal of Public Policy

One of the most important responsibilities the United States assumed following World War II was ensuring the stable flow of relatively inexpensive oil to the industrialized and industrializing countries of the world. A glance at a list of the top petroleum exporting countries shows that most of them are poor, have despotic governments, and experience frequent bouts of political instability and ideological extremism.

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Survey Of Supercomputer Cluster Security Issues, George Markowsky, Linda Markowsky Jun 2007

Survey Of Supercomputer Cluster Security Issues, George Markowsky, Linda Markowsky

Computer Science Faculty Research & Creative Works

The authors believe that providing security for supercomputer clusters is different from providing security for stand-alone PCs. The types of programs that supercomputer clusters run and the sort of data available on supercomputer clusters are fundamentally different from the programs and data found on stand-alone PCs. This situation might attract a different type of attacker with different goals and different tactics. This paper discusses the results of a questionnaire sent out to many supercomputer clusters in the United States and relates them to a literature search that was also undertaken. These results suggest approaches that can be taken to further …

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Virtual Walls: Protecting Digital Privacy In Pervasive Environments, Apu Kapadia, Tristan Henderson, Jeffrey Fielding, David Kotz May 2007

Virtual Walls: Protecting Digital Privacy In Pervasive Environments, Apu Kapadia, Tristan Henderson, Jeffrey Fielding, David Kotz

Dartmouth Scholarship

As pervasive environments become more commonplace, the privacy of users is placed at an increased risk. The numerous and diverse sensors in these environments can record contextual information about users, leading to users unwittingly leaving “digital footprints.” Users must therefore be allowed to control how their digital footprints are reported to third parties. While a significant amount of prior work has focused on location privacy, location is only one specific type of footprint, and we expect most users to be incapable of specifying fine-grained policies for a multitude of footprints. In this paper we present a policy language based on …

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Is Rfid Safe And Secure?, E. Latham, K. Michael Feb 2007

Is Rfid Safe And Secure?, E. Latham, K. Michael

Professor Katina Michael

No abstract provided.

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The Benefits & Concerns Of Public Data Availability In Australia: A Survey Of Security Experts, Roba Abbas Jan 2007

The Benefits & Concerns Of Public Data Availability In Australia: A Survey Of Security Experts, Roba Abbas

Faculty of Informatics - Papers (Archive)

This paper gauges the attitudes of security experts in Australia with regards to public data availability on critical infrastructure protection (CIP). A qualitative survey was distributed to a individuals considered experts in CIP-related research in Australia, in order to address the censorship versus open access debate concerning public data. The intention of the study was to gain an insight into the perceived benefits and threats of public data availability by security experts, and to provide the basis for a security solution to be utilised by the Australian Government sector (at all levels). The findings however can also be applied to …

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Modelling Mas-Specific Security Features, Ghassan Beydoun, Graham C. Low, Haralambos Mouratidis, Brian Henderson-Sellers Jan 2007

Modelling Mas-Specific Security Features, Ghassan Beydoun, Graham C. Low, Haralambos Mouratidis, Brian Henderson-Sellers

Faculty of Informatics - Papers (Archive)

In this paper, we pursue a modelling approach to address security requirements for multi-agent systems (MAS). This will allow developers to account for both the system and agent-specific security requirements of a MAS during the requirements phase and throughout the whole Software Development Lifecycle of the system. We focus on autonomy, mobility and cooperation of individual agents and how these create additional security vulnerabilities to the system. In proposing a set of generic modelling primitives for these engendered requirements in the analysis of the MAS, we extend our recently proposed MAS metamodel.

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Rfid-Based Anti-Theft Auto Security System With An Immobilizer, Geeth Jayendra, Sisil Kumarawadu, Lasantha Meegahapola Jan 2007

Rfid-Based Anti-Theft Auto Security System With An Immobilizer, Geeth Jayendra, Sisil Kumarawadu, Lasantha Meegahapola

Faculty of Informatics - Papers (Archive)

This paper presents a novel radio frequency identification (RFID) based vehicle immobilizer system, which features low hacking probability while preserving the safety of the passengers of the hijacked vehicle. The immobilizer uses the active RFID technology where the tag is generated with comparatively large character sets. The receiving unit is intelligently integrated into three control circuits in the vehicle, namely, ignition circuit, power control unit, and automatic gear changing system, enabling it to bring the vehicle speed down to zero in a safe step by step manner. The anti-theft auto security system proposed here was tested under different weather conditions …

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Providing Vanet Security Through Active Position Detection, Gongjun Yan, Gyanesh Choudhary, Michele C. Weigle, Stephan Olariu Jan 2007

Providing Vanet Security Through Active Position Detection, Gongjun Yan, Gyanesh Choudhary, Michele C. Weigle, Stephan Olariu

Computer Science Faculty Publications

Our main contribution is a novel approach to enhancing position security in VANET. We achieve local and global position security by using the on-board radar to detect neighboring vehicles and to confirm their announced coordinates. We compute cosine similarity among data collected by radar and neighbors' reports to filter the forged data from the truthful data. Based on filtered data, we create a history of vehicle movement. By checking the history and computing similarity, we can prevent a large number of Sybil attacks and some combinations of Sybil and position-based attacks.

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Performance Analysis Of Security Aspects In Uml Models, Dorin Bogdan Petriu, Dorina C. Petriu, C Murray Woodside, Jing Xiu, Toqeer A. Israr, Geri Georg, Robert B. France, James M. Bieman, Siv Holde Houmb, Jan Jurjens Jan 2007

Performance Analysis Of Security Aspects In Uml Models, Dorin Bogdan Petriu, Dorina C. Petriu, C Murray Woodside, Jing Xiu, Toqeer A. Israr, Geri Georg, Robert B. France, James M. Bieman, Siv Holde Houmb, Jan Jurjens

Faculty Research & Creative Activity

The focus of the paper is on the analysis of performance effects of different security solutions modeled as aspects in UML. Aspect oriented modeling (AOM) allows software designers to isolate and separately address solutions for crosscutting concerns, which are defined as distinct UML aspect models, then are composed with the primary UML model of the system under development. For performance analysis we use techniques developed previously in the PUMA project, which take as input UML models annotated with the standard UML Profile for Schedulability, Performance and Time (SPT), and transform them first into Core Scenario Model (CSM) and then into …

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The Importance Of Scenarios In Evaluating The Socio-Ethical Implications Of Location-Based Services, L. Perusco, Katina Michael Dec 2006

The Importance Of Scenarios In Evaluating The Socio-Ethical Implications Of Location-Based Services, L. Perusco, Katina Michael

Faculty of Informatics - Papers (Archive)

Location-based services (LBS) are those applications that utilize the position of an end-user, animal or thing based on a given device (handheld, wearable, interwoven into fabric or implanted), executed for a particular purpose. LBS applications range from those that are mission-critical to those that are used for convenience, from those that are mandatory to those that are voluntary, from those that are targeted at the mass market to those that cater for the needs of a niche market. Location services can be implemented using a variety of access mediums including global positioning systems and radio-frequency identification, rendering approximate or precise …

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Secure Transmission Of Shared Electronic Health Records: A Review, Rachel J. Mahncke, Patricia A. Williams Dec 2006

Secure Transmission Of Shared Electronic Health Records: A Review, Rachel J. Mahncke, Patricia A. Williams

Australian Information Security Management Conference

Paperbased health records together with electronic Patient Management Systems remain the norm for hospitals and primary care practices to manage patient health information in Australia. Although the benefits of recording patient health information into an electronic format known as an electronic health record (EHR) are well documented, the use of these systems has not yet been fully realised. The next advancement for EHRs is the ability to share health records for the primary purpose of improved patient care. This may for example enable a primary care physician, with the patient’s consent, to electronically share pertinent health information with a specialist, …

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Cyber Crime And Biometric Authentication – The Problem Of Privacy Versus Protection Of Business Assets, Michael G. Crowley Dec 2006

Cyber Crime And Biometric Authentication – The Problem Of Privacy Versus Protection Of Business Assets, Michael G. Crowley

Australian Information Security Management Conference

Cyber crime is now a well recognised international problem that is a major issue for anyone who runs, manages, owns, uses or accesses computer systems linked to the worldwide web. Computer systems are business assets. Personal biometric information is also an asset. Studies have shown that privacy concerns represent a key hurdle to the successful introduction of biometric authentication. In addition, terrorist activity and the resultant legislation have added an additional risk factor businesses need to take into account if they propose using biometric authentication technology. This paper explores the use of biometric authentication to protect business and individual assets. …

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Does Your Wireless Lan Have Criminal Intent?, Michael Crowley, Andrew Woodward Dec 2006

Does Your Wireless Lan Have Criminal Intent?, Michael Crowley, Andrew Woodward

Australian Information Security Management Conference

All of the literature relating to wireless network security has focused on the flaws, newer alternatives and suggestions for securing the network. There is much speculation and anecdotal statements in relation to what can happen if a breach occurs, but this is mostly from a computer security perspective, and mostly expressed in terms of potential for financial loss. This paper examines the potential legal ramifications of failing to properly secure a wireless network. Several scenarios are examined within based on usage of wireless on the various category of attack. Legal opinion, backed up with case law, is provided for each …

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Making Research Real: Is Action Research A Suitable Methodology For Medical Information Security Investigations?, Patricia A. Williams Dec 2006

Making Research Real: Is Action Research A Suitable Methodology For Medical Information Security Investigations?, Patricia A. Williams

Australian Information Security Management Conference

In the medical field, information security is an important yet vastly underrated issue. Research into the protection of sensitive medical data is often technically focused and does not address information systems and behavioural aspects integral to effective information security implementation. Current information security policy and guidelines are strategically oriented which, whilst relevant to large organisations, are less supportive to smaller enterprises such as primary care practices. Further, the conservative nature of the medical profession has been shown to hinder investigation into information technology use and management, making effective improvement based on research problematical. It is an environment which relies greatly …

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Security Issues Of Ieee 802.16 (Wimax), Jamshed Hasan Dec 2006

Security Issues Of Ieee 802.16 (Wimax), Jamshed Hasan

Australian Information Security Management Conference

Worldwide Interoperability for Microwave Access (WiMAX) is going to be an emerging wireless technology for the future. With the increasing popularity of Broadband internet, wireless networking market is thriving. Wireless network is not fully secure due to rapid release of new technologies, market competition and lack of physical infrastructure. In the IEEE 802.11 technology, security was added later. Iin IEEE 802.16, security has been considered as the main issue during the design of the protocol. However, security mechanism of the IEEE 802.16 (WiMAX) still remains a question. WiMAX is relatively a new technology; not deployed widely to justify the evidence …

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Mapping The Consensual Knowledge Of Security Risk Management Experts, David J. Brooks Dec 2006

Mapping The Consensual Knowledge Of Security Risk Management Experts, David J. Brooks

Australian Information Warfare and Security Conference

The security industry comprises of diverse and multidisciplined practitioners, originating from many disciplines. It has been suggested that the industry has an undefined knowledge structure, although security experts contain a rich knowledge structure. There has also been limited research mapping security expert knowledge structure, reducing the ability of tertiary educators to provide industry focused teaching and learning. The study utilized multidimensional scaling (MDS) and expert interviews to map the consensual knowledge structure of security experts in their understanding of security risk. Security risk concepts were extracted and critiqued from West Australian university courses. Linguistic analysis categorised the more utilized security …

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National Security: The Social Implications Of The Politics Of Transparency, M G. Michael, Katina Michael Dec 2006

National Security: The Social Implications Of The Politics Of Transparency, M G. Michael, Katina Michael

Faculty of Informatics - Papers (Archive)

This special issue of Prometheus is dedicated to the theme of the Social Implications of National Security Measures on Citizens and Business. National security measures can be defined as those technical and non-technical measures that have been initiated as a means to curb breaches in national security, irrespective of whether these might occur by nationals or aliens in or from outside the sovereign state. National security includes such government priorities as maintaining border control, safeguarding against pandemic outbreaks, preventing acts of terror, and even discovering and eliminating identification fraud. Governments worldwide are beginning to implement information and communication security techniques …

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Security In Pervasive Computing: Current Status And Open Issues, Munirul Haque, Sheikh Iqbal Ahamed Nov 2006

Security In Pervasive Computing: Current Status And Open Issues, Munirul Haque, Sheikh Iqbal Ahamed

Mathematics, Statistics and Computer Science Faculty Research and Publications

Million of wireless device users are ever on the move, becoming more dependent on their PDAs, smart phones, and other handheld devices. With the advancement of pervasive computing, new and unique capabilities are available to aid mobile societies. The wireless nature of these devices has fostered a new era of mobility. Thousands of pervasive devices are able to arbitrarily join and leave a network, creating a nomadic environment known as a pervasive ad hoc network. However, mobile devices have vulnerabilities, and some are proving to be challenging. Security in pervasive computing is the most critical challenge. Security is needed to …

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Location-Based Services And The Privacy-Security Dichotomy, Katina Michael, L. Perusco, M G. Michael Oct 2006

Location-Based Services And The Privacy-Security Dichotomy, Katina Michael, L. Perusco, M G. Michael

Faculty of Informatics - Papers (Archive)

Location-based services (LBS) rely on knowledge of a user’s location to provide tailored services or information by means of a wireless device. LBS applications have wide-ranging implications for society, particularly in the context of tracking and monitoring groups of individuals such as children, invalids, and parolees. Despite a great deal of attention paid to technical and commercial aspects of LBS technologies, consideration of the legal, ethical, social and technology momentum issues involved has been wanting. This paper examines some of the more pressing issues that are expected to arise from the widespread use of LBS. The outcome of this paper …

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Australia's National Security: An Interview With Dr Katina Michael, G. Messaris, K. Michael May 2006

Australia's National Security: An Interview With Dr Katina Michael, G. Messaris, K. Michael

Professor Katina Michael

No abstract provided.

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Scalability In A Secure Distributed Proof System, Kazuhiro Minami, David Kotz May 2006

Scalability In A Secure Distributed Proof System, Kazuhiro Minami, David Kotz

Dartmouth Scholarship

A logic-based language is often adopted in systems for pervasive computing, because it provides a convenient way to define rules that change the behavior of the systems dynamically. Those systems might define rules that refer to the users' context information to provide context-aware services. For example, a smart-home application could define rules referring to the location of a user to control the light of a house automatically. In general, the context information is maintained in different administrative domains, and it is, therefore, desirable to construct a proof in a distributed way while preserving each domain's confidentiality policies. In this paper, …

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Electronic Records Management Criteria And Information Security, A Shaw, David T. Shaw Apr 2006

Electronic Records Management Criteria And Information Security, A Shaw, David T. Shaw

Australian Information Warfare and Security Conference

Records management practices are mandatory in many business and government operations. Records management is a mature discipline with extensive body of knowledge, professional associations and clearly defined Australian and international standards. Records systems encompass the hardware, software and people necessary for operation and include records generated by and for the system. The Australian legal system has clearly defined standards for admissible evidence in the Evidence Act. Relevant records may require substantial preparation for submission and yet be inadmissible in legal proceedings. The records and system may be challenged in both theoretical and practical senses and appropriate practices and associated records …

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Engineering A Suburban Ad-Hoc Network, Mike Tyson, Ronald D. Pose, Carlo Kopp, Mohammad Rokonuzzaman, Muhammad Mahmudul Islam Apr 2006

Engineering A Suburban Ad-Hoc Network, Mike Tyson, Ronald D. Pose, Carlo Kopp, Mohammad Rokonuzzaman, Muhammad Mahmudul Islam

Australian Information Warfare and Security Conference

Networks are growing in popularity, as wireless communication hardware, both fixed and mobile, becomes more common and affordable. The Monash Suburban Ad-Hoc Network (SAHN) project has devised a system that provides a highly secure and survivable ad-hoc network, capable of delivering broadband speeds to co-operating users within a fixed environment, such as a residential neighbourhood, or a campus. The SAHN can be used by residents within a community to exchange information, to share access to the Internet, providing last-mile access, or for local telephony and video conferencing. SAHN nodes are designed to be self-configuring and selfmanaging, relying on no experienced …

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Channel Sampling Strategies For Monitoring Wireless Networks, Udayan Deshpande, Tristan Henderson, David Kotz Apr 2006

Channel Sampling Strategies For Monitoring Wireless Networks, Udayan Deshpande, Tristan Henderson, David Kotz

Dartmouth Scholarship

Monitoring the activity on an IEEE 802.11 network is useful for many applications, such as network management, optimizing deployment, or detecting network attacks. Deploying wireless sniffers to monitor every access point in an enterprise network, however, may be expensive or impractical. Moreover, some applications may require the deployment of multiple sniffers to monitor the numerous channels in an 802.11 network. In this paper, we explore sampling strategies for monitoring multiple channels in 802.11b/g networks. We describe a simple sampling strategy, where each channel is observed for an equal, predetermined length of time, and consider applications where such a strategy might …

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Alphaco: A Teaching Case On Information Technology Audit And Security, Hüseyin Tanriverdi, Joshua Bertsch, Jonathan Harrison, Po-Ling Hsiao, Ketan S. Mesuria, David Hendrawirawan Jan 2006

Alphaco: A Teaching Case On Information Technology Audit And Security, Hüseyin Tanriverdi, Joshua Bertsch, Jonathan Harrison, Po-Ling Hsiao, Ketan S. Mesuria, David Hendrawirawan

Journal of Digital Forensics, Security and Law

Recent regulations in the United States (U.S.) such as the Sarbanes-Oxley Act of 2002 require top management of a public firm to provide reasonable assurance that they institute internal controls that minimize risks over the firm’s operations and financial reporting. External auditors are required to attest to the management’s assertions over the effectiveness of those internal controls. As firms rely more on information technology (IT) in conducting business, they also become more vulnerable to IT related risks. IT is critical for initiating, recording, processing, summarizing and reporting accurate financial and non-financial data. Thus, understanding IT related risks and instituting internal …

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A Key Predistribution Scheme For Sensor Networks Using Deployment Knowledge, Wenliang Du, Jing Deng, Yunghsiang S. Han, Pramod K. Varshney Jan 2006

A Key Predistribution Scheme For Sensor Networks Using Deployment Knowledge, Wenliang Du, Jing Deng, Yunghsiang S. Han, Pramod K. Varshney

Electrical Engineering and Computer Science - All Scholarship

To achieve security in wireless sensor networks, it is important to be able to encrypt messages sent among sensor nodes. Keys for encryption purposes must be agreed upon by communicating nodes. Due to resource constraints, achieving such key agreement in wireless sensor networks is non-trivial. Many key agreement schemes used in general networks, such as Diffie-Hellman and public-key based schemes, are not suitable for wireless sensor networks. Pre-distribution of secret keys for all pairs of nodes is not viable due to the large amount of memory used when the network size is large. Recently, a random key pre-distribution scheme and …

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Using Scenario Planning In The Evaluation Of Information Security Applications, Laura Perusco Jan 2006

Using Scenario Planning In The Evaluation Of Information Security Applications, Laura Perusco

Faculty of Informatics - Papers (Archive)

This paper provides a broad overview of the scenario approach as it relates to the evaluation of location based services (LBS) technologies and their appl ication. A scenario is a plausible vision of the future, based around a particular technology or application and developed via a scenario planning methodology. The main worth of the scenario planning approach is that it allows an application to be evaluated in terms of potential social impacts as well as technical merit and commercial viability. A sample scenario is presented within the paper to illustrate how the scenario planning methodology can be used. This scenario …

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New Applications Of Modulated Digital Images In Document Security, Robert A. Lee, Patrick W. Leech, Lawrey D. Mccarthy, Gerhard F. Swiegers Jan 2006

New Applications Of Modulated Digital Images In Document Security, Robert A. Lee, Patrick W. Leech, Lawrey D. Mccarthy, Gerhard F. Swiegers

Faculty of Science - Papers (Archive)

In previous work we have demonstrated that selective masking, or modulation, of digital images can be used to create documents and transparent media containing covert or optically variable, overt images. In the present work we describe new applications and techniques of such "modulated digital images" (MDI's) in document security. In particular, we demonstrate that multiple hidden images can be imperceptibly concealed within visible, host images by incorporating them as a new, half-tone, printing screen. Half-toned hidden images of this type may contain a variety of novel features that hinder unauthorized copying, including concealed multiple images, and microprinted-, color-, and various …

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The Insider Threat To Medical Records: Has The Network Age Changed Anything?, Craig Valli Jan 2006

The Insider Threat To Medical Records: Has The Network Age Changed Anything?, Craig Valli

Research outputs pre 2011

There is increasing pressure on medical practices to use digital information systems for storage of patient data. Some consideration is given to protecting these systems from a external or “ hacker” focus. This paper looks at the issue that the increasing use of digital information systems has for insider malfeasance.

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Collaboration Enforcement In Mobile Ad Hoc Networks, Ning Jiang Jan 2006

Collaboration Enforcement In Mobile Ad Hoc Networks, Ning Jiang

Electronic Theses and Dissertations

Mobile Ad hoc NETworks (MANETs) have attracted great research interest in recent years. Among many issues, lack of motivation for participating nodes to collaborate forms a major obstacle to the adoption of MANETs. Many contemporary collaboration enforcement techniques employ reputation mechanisms for nodes to avoid and penalize malicious participants. Reputation information is propagated among participants and updated based on complicated trust relationships to thwart false accusation of benign nodes. The aforementioned strategy suffers from low scalability and is likely to be exploited by adversaries. To address these problems, we first propose a finite state model. With this technique, no reputation …

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