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Articles 511 - 540 of 681
Full-Text Articles in Physical Sciences and Mathematics
Grouper: A Packet Classification Algorithm Allowing Time-Space Tradeoffs, Joshua Adam Kuhn
Grouper: A Packet Classification Algorithm Allowing Time-Space Tradeoffs, Joshua Adam Kuhn
USF Tampa Graduate Theses and Dissertations
This thesis presents an algorithm for classifying packets according to arbitrary (including noncontiguous) bitmask rules. As its principal novelty, the algorithm is parameterized by the amount of memory available and can customize its data structures to optimize classification time without exceeding the given memory bound. The algorithm thus automatically trades time for space efficiency as needed. The two extremes of this time-space tradeoff (linear search through the rules versus a single table that maps every possible packet to its class number) are special cases of the general algorithm we present. Additional features of the algorithm include its simplicity, its open-source …
An Analysis Of Remote Biometric Authentication With Windows, Brandy Marie Eyers
An Analysis Of Remote Biometric Authentication With Windows, Brandy Marie Eyers
USF Tampa Graduate Theses and Dissertations
One thing that everyone seems to be worried about when it comes to his or her computer is security. If your computer is not secure then private information could be stolen. Many people now use passwords to protect themselves though they are discovering that using multi-factor authentication is much more secure. It allows you to use multiple different proofs of who you are. Biometrics is one of the ways to prove identity. Using it, you could log into a system with just a fingerprint, which is something that is very difficult to steal. We present a suite of software tools …
Modularizing Crosscutting Concerns In Software, Nalin Saigal
Modularizing Crosscutting Concerns In Software, Nalin Saigal
USF Tampa Graduate Theses and Dissertations
Code modularization provides benefits throughout the software life cycle; however, the presence of crosscutting concerns (CCCs) in software hinders its complete modularization. Traditional modularization techniques work well under the assumption that code being modularized is functionally orthogonal to the rest of the code; as a result, software engineers try to separate code segments that are orthogonal in their functionality into distinct modules. However, in practice, software does not decompose neatly into modules with distinct, orthogonal functionality. In this thesis, we investigate the modularization of CCCs in software using two different techniques.
Firstly, we discuss IVCon, a GUI-based tool that provides …
On The Applications Of Deterministic Chaos For Encrypting Data On The Cloud, Jonathan Blackledge, Nikolai Ptitsyn
On The Applications Of Deterministic Chaos For Encrypting Data On The Cloud, Jonathan Blackledge, Nikolai Ptitsyn
Conference papers
Cloud computing is expected to grow considerably in the future because it has so many advantages with regard to sale and cost, change management, next generation architectures, choice and agility. However, one of the principal concerns for users of the Cloud is lack of control and above all, data security. This paper considers an approach to encrypting information before it is ‘placed’ on the Cloud where each user has access to their own encryption algorithm, an algorithm that is based on a set of iterated function systems that outputs a chaotic number stream, designed to produce a cryptographically secure cipher. …
A Threat Taxonomy For Mhealth Privacy, David Kotz
A Threat Taxonomy For Mhealth Privacy, David Kotz
Dartmouth Scholarship
Networked mobile devices have great potential to enable individuals (and their physicians) to better monitor their health and to manage medical conditions. In this paper, we examine the privacy-related threats to these so-called \emphmHealth\/ technologies. We develop a taxonomy of the privacy-related threats, and discuss some of the technologies that could support privacy-sensitive mHealth systems. We conclude with a brief summary of research challenges.
The Social Implications Of Covert Policing, Simon Bronitt, Clive Harfield, K. Michael
The Social Implications Of Covert Policing, Simon Bronitt, Clive Harfield, K. Michael
Professor Katina Michael
Police agencies have been accused of suffering from an acute form of technophilia. Rather than representing some dreadful disorder, this assessment reflects the strong imperative, both in police agencies and the wider community, that police must have access to the latest technologies of surveillance and crime detection.
The last decade has witnessed the proliferation of low-cost surveillance technologies, some developed specifically for law enforcement purposes. Technology once the preserve of the military or secret intelligence agencies is now within the reach of ordinary general duties police officers. The new generation of police recruits is highly adept at using new technologies. …
Trusted Mobile Overlays, Robert Scott Robertson
Trusted Mobile Overlays, Robert Scott Robertson
Theses and Dissertations
Sensitive information is increasingly moving online and as data moves further from the control of its owner, there are increased opportunities for it to fall into malicious hands. The Web is comprised of three untrusted components where there is a risk of information compromise: networks, service providers, and clients. This thesis presents Trusted Mobile Overlays: a system that leverages trusted mobile devices to protect users from these untrusted components of the Web, while minimizing deployment difficulties. It presents a high-level design of the system as well as a prototype that implements the design.
Information Security Disclosure: A Victorian Case Study, Ian Rosewall, Matthew Warren
Information Security Disclosure: A Victorian Case Study, Ian Rosewall, Matthew Warren
Australian Information Security Management Conference
This paper will focus upon the impact of Generation Y and their attitudes to security. The paper will be based around discussing the findings of a recent report by the Office of Police Integrity (OPI) on “Information Security and the Victoria Police State Surveillance Unit”. Issues that will be discussed include the context of Generation Y and how they contribute to the case study, their attitudes, or their perceived attitudes to security of information. A discussion of the OPI report itself, and the issues that have arisen. A brief overview of the key findings within this report and the implications …
Threat Modelling With Stride And Uml, Michael N. Johnstone
Threat Modelling With Stride And Uml, Michael N. Johnstone
Australian Information Security Management Conference
Threat modelling as part of risk analysis is seen as an essential part of secure systems development. Microsoft’s Security Development Lifecycle (SDL) is a well-known software development method that places security at the forefront of product initiation, design and implementation. As part of SDL, threat modelling produces data flow diagrams (DFDs) as key artefacts and uses those diagrams as mappings with STRIDE to identify threats. This paper uses a standard case study to illustrate the effects of using an alternative process model (UML activity diagrams) with STRIDE and suggests that using a more modern process diagram can generate a more …
Wikileaks: The Truth Or Not, Ian Rosewall, Matthew J. Warren
Wikileaks: The Truth Or Not, Ian Rosewall, Matthew J. Warren
Australian Information Warfare and Security Conference
We live in the Information Age, an age where information is shared in a global context and in real time. The issue is whether all information should be disclosed. In the ‘Information Age’ do secrets still exist? Another major issue is whether groups of vigilantes are the ones who should be disclosing this information, should these vigilante groups be trusted? This paper will focus upon the impact of Wikileaks and the problem of Information disclosure especially when that information is confidential. It will identify cases for discussion. In the main these cases will be of a military flavour.
Micro-Blogging In The Workplace, Chia Yao Lee, Matthew Warren
Micro-Blogging In The Workplace, Chia Yao Lee, Matthew Warren
Australian Information Security Management Conference
Micro-blogging services such as Twitter, Yammer, Plurk and Google Buzz have generated substantial interest among members of the business community in recent years. Many CEOs, managers and front-line employees have embraced micro-blogs as a tool for interacting with colleagues, employees, customers, suppliers and investors. Micro-blogs are considered a more informal channel than emails and official websites, and thus present a different set of challenges to businesses. As a positional paper, this paper uses a case study of a bogus Twitter account to emphasise security and ethical issues relating to (i) Trust, Accuracy and Authenticity of Information, (ii) Privacy and Confidentiality, …
The Economics Of Developing Security Embedded Software, Craig S. Wright, Tanveer A. Zia
The Economics Of Developing Security Embedded Software, Craig S. Wright, Tanveer A. Zia
Australian Information Security Management Conference
Market models for software vulnerabilities have been disparaged in the past citing how these do little to lower the risk of insecure software. In this paper we argue that the market models proposed are flawed and not the concept of a market itself. A well-defined software risk derivative market would improve the information exchange for both the software user and vendor removing the often touted imperfect information state that is said to believe the software industry. In this way, users could have a rational means of accurately judging software risks and costs and as such the vendor could optimally apply …
The Kerf Toolkit For Intrusion Analysis, Javed A. Aslam, Sergey Bratus, David Kotz, Ron Peterson, Brett Tofel, Daniela Rus
The Kerf Toolkit For Intrusion Analysis, Javed A. Aslam, Sergey Bratus, David Kotz, Ron Peterson, Brett Tofel, Daniela Rus
Javed A. Aslam
To aid system administrators with post-attack intrusion analysis, the Kerf toolkit provides an integrated front end and powerful correlation and data-representation tools, all in one package.
A Study Of Wireless Network Security, Ningwei Sun
A Study Of Wireless Network Security, Ningwei Sun
All Capstone Projects
I intend to make a survey in wireless data security since wireless networks are very common, both for organizations and individuals. Many laptop computers have wireless cards pre-installed. The ability to enter a wireless network has great benefits. However, wireless networking has many security issues. Hackers have found wireless networks relatively easy to break into, and even use wireless technology to crack into wired network. As a result, it's very important that enterprises define effective wireless security policies that guard against unauthorized access to important resources.
My survey research may involve these following aspects: wireless network architecture, data security in …
Cloud Computing:Strategies For Cloud Computing Adoption, Faith Shimba
Cloud Computing:Strategies For Cloud Computing Adoption, Faith Shimba
Dissertations
The advent of cloud computing in recent years has sparked an interest from different organisations, institutions and users to take advantage of web applications. This is a result of the new economic model for the Information Technology (IT) department that cloud computing promises. The model promises a shift from an organisation required to invest heavily for limited IT resources that are internally managed, to a model where the organisation can buy or rent resources that are managed by a cloud provider, and pay per use. Cloud computing also promises scalability of resources and on-demand availability of resources.
Although, the adoption …
Event Study Method For Validating Agent-Based Trading Simulations, Shih-Fen Cheng
Event Study Method For Validating Agent-Based Trading Simulations, Shih-Fen Cheng
Research Collection School Of Computing and Information Systems
In this paper, we introduce how one can validate an event-centric trading simulation platform that is built with multi-agent technology. The issue of validation is extremely important for agent-based simulations, but unfortunately, so far there is no one universal method that would work in all domains. The primary contribution of this paper is a novel combination of event-centric simulation design and event study approach for market dynamics generation and validation. In our event-centric design, the simulation is progressed by announcing news events that affect market prices. Upon receiving these events, event-aware software agents would adjust their views on the market …
A Formal Context Specific Trust Model (Ftm) For Multimedia And Ubiquitous Computing Environment, Sheikh Iqbal Ahamed, Munirul M. Haque, Nilothpal Talukder
A Formal Context Specific Trust Model (Ftm) For Multimedia And Ubiquitous Computing Environment, Sheikh Iqbal Ahamed, Munirul M. Haque, Nilothpal Talukder
Mathematics, Statistics and Computer Science Faculty Research and Publications
In order to ensure secure sharing of resources in an ad-hoc network of handheld devices in a multimedia and ubiquitous computing environment, mutual collaboration is essential. However, the limitations, such as poor storage and computational capability of these multimedia and ubiquitous devices stand as the bottleneck for effective sharing of resources. As a result of this drawback, the adversaries are obtaining access to the new doors for security breaches. Mutual Trust is the weapon used to combat security violations by restricting malicious devices from participating in any interaction in such an open and dynamic environment. In this paper, we present …
Protecting Privacy And Ensuring Security Of Rfid Systems Using Private Authentication Protocols, Md. Endadul Hoque
Protecting Privacy And Ensuring Security Of Rfid Systems Using Private Authentication Protocols, Md. Endadul Hoque
Master's Theses (2009 -)
Radio Frequency IDentification (RFID) systems have been studied as an emerging technology for automatic identification of objects and assets in various applications ranging from inventory tracking to point of sale applications and from healthcare applications to e-passport. The expansion of RFID technology, however, gives rise to severe security and privacy concerns. To ensure the widespread deployment of this technology, the security and privacy threats must be addressed. However, providing solutions to the security and privacy threats has been a challenge due to extremely inadequate resources of typical RFID tags. Authentication protocols can be a possible solution to secure RFID communications. …
Is Bluetooth The Right Technology For Mhealth?, Shrirang Mare, David Kotz
Is Bluetooth The Right Technology For Mhealth?, Shrirang Mare, David Kotz
Dartmouth Scholarship
Many people believe mobile healthcare (mHealth) would help alleviate the rising cost of healthcare and improve the quality of service. Bluetooth, which is the most popular wireless technology for personal medical devices, is used for most of the mHealth sensing applications. In this paper we raise the question – Is Bluetooth the right technology for mHealth? To instigate the discussion we discuss some shortcomings of Bluetooth and also point out an alternative solution.
Can I Access Your Data? Privacy Management In Mhealth, Aarathi Prasad, David Kotz
Can I Access Your Data? Privacy Management In Mhealth, Aarathi Prasad, David Kotz
Dartmouth Scholarship
Mobile health (mHealth) has become important in the field of healthcare information technology, as patients begin to use mobile medical sensors to record their daily activities and vital signs. Since their medical data is collected by their sensors, the patients may wish to control data collection and distribution, so as to protect their data and share it only when the need arises. It must be possible for patients to grant or deny access to the data on the storage unit (mobile phones or personal health records (PHR)). Thus, an efficient framework is required for managing patient consent electronically, i.e.to allow …
On Usable Authentication For Wireless Body Area Networks, Cory Cornelius, David Kotz
On Usable Authentication For Wireless Body Area Networks, Cory Cornelius, David Kotz
Dartmouth Scholarship
We examine a specific security problem in wireless body area networks (WBANs), what we call the ıt one body authentication problem. That is, how can we ensure that the wireless sensors in a WBAN are collecting data about one individual and not several individuals. We explore existing solutions to this problem and provide some analysis why these solutions are inadequate. Finally, we provide some direction towards a promising solution to the problem and how it can be used to create a usably secure WBAN.
Environmental Obfuscation Of A Cyber Physical System - Vehicle Example, Jason Madden, Bruce M. Mcmillin, Anik Sinha
Environmental Obfuscation Of A Cyber Physical System - Vehicle Example, Jason Madden, Bruce M. Mcmillin, Anik Sinha
Computer Science Faculty Research & Creative Works
Cyber-Physical Systems (CPSs) are deeply embedded infrastructures that have significant cyber and physical components that interact with each other in complex ways. These interactions can violate a system's security policy, leading to unintended information flow. The physical portion of such systems is inherently observable, and, as such, many methods of preserving confidentiality are not applicable. This fundamental property of CPSs presents new security challenges. To illustrate this, a vehicle composed of an embedded computer system, its operator, and its environment show how information is disclosed to an observer that is watching from the outside. The example is made of up …
Social-Technical Issues Facing The Humancentric Rfid Implantee Sub-Culture Through The Eyes Of Amal Graafstra, Amal Graafstra, K. Michael, M.G. Michael
Social-Technical Issues Facing The Humancentric Rfid Implantee Sub-Culture Through The Eyes Of Amal Graafstra, Amal Graafstra, K. Michael, M.G. Michael
Associate Professor Katina Michael
Radio-frequency identification (RFID) tags and transponders have traditionally been used to identify domesticated animals so that they can be reunited with their owners in the event that they stray. In the late 1990s, industry started to investigate the benefits of using RFID to identifying non-living things throughout the supply chain toward new efficiencies in business operations. Not long after, people began to consider the possibilities of getting RFID tag or transponder implants for themselves. Mr Amal Graafstra of the United States is one of the first, and probably most well-known ‘do it yourselfer’ (DIY) implantees, who enjoys building customized projects …
Social-Technical Issues Facing The Humancentric Rfid Implantee Sub-Culture Through The Eyes Of Amal Graafstra, Amal Graafstra, K. Michael, M.G. Michael
Social-Technical Issues Facing The Humancentric Rfid Implantee Sub-Culture Through The Eyes Of Amal Graafstra, Amal Graafstra, K. Michael, M.G. Michael
M. G. Michael
Radio-frequency identification (RFID) tags and transponders have traditionally been used to identify domesticated animals so that they can be reunited with their owners in the event that they stray. In the late 1990s, industry started to investigate the benefits of using RFID to identifying non-living things throughout the supply chain toward new efficiencies in business operations. Not long after, people began to consider the possibilities of getting RFID tag or transponder implants for themselves. Mr Amal Graafstra of the United States is one of the first, and probably most well-known ‘do it yourselfer’ (DIY) implantees, who enjoys building customized projects …
Social-Technical Issues Facing The Humancentric Rfid Implantee Sub-Culture Through The Eyes Of Amal Graafstra, Amal Graafstra, K. Michael, M.G. Michael
Social-Technical Issues Facing The Humancentric Rfid Implantee Sub-Culture Through The Eyes Of Amal Graafstra, Amal Graafstra, K. Michael, M.G. Michael
Professor Katina Michael
Radio-frequency identification (RFID) tags and transponders have traditionally been used to identify domesticated animals so that they can be reunited with their owners in the event that they stray. In the late 1990s, industry started to investigate the benefits of using RFID to identifying non-living things throughout the supply chain toward new efficiencies in business operations. Not long after, people began to consider the possibilities of getting RFID tag or transponder implants for themselves. Mr Amal Graafstra of the United States is one of the first, and probably most well-known ‘do it yourselfer’ (DIY) implantees, who enjoys building customized projects …
Revisiting Unpredictability-Based Rfid Privacy Models, Junzuo Lai, Robert Huijie Deng, Yingjiu Li
Revisiting Unpredictability-Based Rfid Privacy Models, Junzuo Lai, Robert Huijie Deng, Yingjiu Li
Research Collection School Of Computing and Information Systems
Recently, there have been several attempts in establishing formal RFID privacy models in the literature. These models mainly fall into two categories: one based on the notion of indistinguishability of two RFID tags, denoted as ind-privacy, and the other based on the unpredictability of the output of an RFID protocol, denoted as unp-privacy. Very recently, at CCS’09, Ma et al. proposed a modified unp-privacy model, referred to as unp ′-privacy. In this paper, we first revisit the existing RFID privacy models and point out their limitations. We then propose a new RFID privacy model, denoted as …
Applying Information Visualization To Computer Security Applications, Robert Bruce Whitaker
Applying Information Visualization To Computer Security Applications, Robert Bruce Whitaker
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
This thesis presents two phases of research in applying visualization to network security challenges. The first phase included discovering the most useful and powerful features in existing computer security visualizations and incorporating them into the AdviseAid visualization platform, an existing software package. The incorporation of such a complete feature set required novel resolution of software engineering, human factors, and computer graphics issues. We also designed additional novel features, such as plugin interfaces, allowing for rapid prototyping and experimentation with novel visualization features and capabilities. The second phase of the research focused on the development of novel visualization techniques themselves. These …
A Secure On-Line Credit Card Transaction Method Based On Kerberos Authentication Protocol, Jung Eun Kim
A Secure On-Line Credit Card Transaction Method Based On Kerberos Authentication Protocol, Jung Eun Kim
UNLV Theses, Dissertations, Professional Papers, and Capstones
Nowadays, electronic payment system is an essential part of modern business. Credit cards or debit cards have been widely used for on-site or remote transactions, greatly reducing the need for inconvenient cash transactions. However, there have been a huge number of incidents of credit card frauds over the Internet due to the security weakness of electronic payment system. A number of solutions have been proposed in the past to prevent this problem, but most of them were inconvenient and did not satisfy the needs of cardholders and merchants at the same time.
In this thesis, we present a new secure …
Dsfs: Decentralized Security For Large Parallel File Systems, Zhongying Niu, Hong Jiang, Ke Zhou, Dan Feng, Tianming Yang, Dongliang Lei, Anli Chen
Dsfs: Decentralized Security For Large Parallel File Systems, Zhongying Niu, Hong Jiang, Ke Zhou, Dan Feng, Tianming Yang, Dongliang Lei, Anli Chen
CSE Technical Reports
This paper describes DSFS, a decentralized security system for large parallel file system. DSFS stores global access control lists (ACLs) in a centralized decisionmaking server and pushes pre-authorization lists (PALs) into storage devices. Thus DSFS allows users to flexibly set any access control policy for the global ACL or even change the global ACL system without having to upgrade the security code in their storage devices. With pre-authorization lists, DSFS enables a networkattached storage device to immediately authorize I/O, instead of demanding a client to acquire an authorization from a centralized authorization server at a crucial time. The client needs …
A New Algorithm On Graphical User Authentication (Gua) Based On Multi-Line Grids, Abdullah Gani
A New Algorithm On Graphical User Authentication (Gua) Based On Multi-Line Grids, Abdullah Gani
Abdullah Gani
Today user authentication stands out as one of the most essential areas in information security which has several ways of being implemented. From time in memorial authentication schemes that apply strong text-based passwords have been typically expected to offer some assurance of security. But committing to memory such strong passwords can prove to be quite a daunting task thus forcing users to resort to writing them down on pieces of papers or even storing them onto a computer file. As a means of thwarting such habits, graphical authentication has been proposed as a replacement for text-based authentication. This has been …