Analysis Domain Model for Shared Virtual Environments

Oliveira, Manuel; Jordan, Joel; Pereira, João; Jorge, Joaquim; Steed, Anthony

doi:10.20870/ijvr.2009.8.4.2745

Cited by 9 publications

(4 citation statements)

References 255 publications

(221 reference statements)

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“…The security concerns focus on e-commerce, demonstrating a need for clarity and transparency on when actions are secure, and privacy is assured. Oliveira et al (2009) discuss interoperability between different solutions, despite several solutions sharing great functional overlap. The paper presents a broad domain analysis on shared virtual environments, providing readers with a sense of how the parts are connected in a greater whole.…”

Section: Related Workmentioning

confidence: 99%

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Cyber Security Threats and Challenges in Collaborative Mixed-Reality

Happa

Glencross²,

Steed

2019

Front. ICT

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Collaborative Mixed-Reality (CMR) applications are gaining interest in a wide range of areas including games, social interaction, design and health-care. To date, the vast majority of published work has focused on display technology advancements, software, collaboration architectures and applications. However, the potential security concerns that affect collaborative platforms have received limited research attention. In this position paper, we investigate the challenges posed by cyber-security threats to CMR systems. We focus on how typical network architectures facilitating CMR and how their vulnerabilities can be exploited by attackers, and discuss the degree of potential social, monetary impacts, psychological and other harms that may result from such exploits. The main purpose of this paper is to provoke a discussion on CMR security concerns. We highlight insights from a cyber-security threat modelling perspective and also propose potential directions for research and development toward better mitigation strategies. We present a simple, systematic approach to understanding a CMR attack surface through an abstraction-based reasoning framework to identify potential attack vectors. Using this framework, security analysts, engineers, designers and users alike (stakeholders) can identify potential Indicators of Exposures (IoE) and Indicators of Compromise (IoC). Our framework allows stakeholders to reduce their CMR attack surface as well understand how Intrusion Detection System (IDS) approaches can be adopted for CMR systems. To demonstrate the validity to our framework, we illustrate several CMR attack surfaces through a set of use-cases. Finally, we also present a discussion on future directions this line of research should take.

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Section: Related Workmentioning

confidence: 99%

“…The attack surface can be considered to be like a data-flow pipeline. This model is loosely inspired by Oliveira et al (2009), the key difference being we look at the analysis domain from the attacker's perspective. We assume that every device, and every sub-component of the device can have this model applied to it.…”

Section: I/o Attack Modelmentioning

confidence: 99%

Cyber Security Threats and Challenges in Collaborative Mixed-Reality

Happa

Glencross²,

Steed

2019

Front. ICT

Self Cite

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“…It is important to bear in mind that the management of all WonderDAC permissions resides at the Wonderland server, as noted in Section 3.2. Aside from managing the issues of general access control and malicious clients, this configuration enables the owner of an object to efficiently assign their ownership to some other participant, avoiding some of the issues raised in [44]. Moreover, the centralization of access control affords us the ability to avoid problems such as deadlock when multiple participants attempt to utilize an object simultaneously (i.e., the Wonderland server becomes the system-of-record to sort things out).…”

Section: Use Case Scenariosmentioning

confidence: 99%

Discretionary Access Controls for a Collaborative Virtual Environment

Wright¹,

Madey²

2010

IJVR

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As collaborative virtual environments (CVEs) are more widely used, participant access to CVE objects and information becomes a significant concern. In virtual reality games, storefronts, classrooms, and laboratories, for example, the need to control access to spaces and objects is integral to the security of activities taking place there. However, limited access controls are typically available in CVEs. Often, such controls are course-grained, only protecting against movements by unauthorized participants into specific areas. In answer to this deficiency, we offer a discretionary access control (DAC) system based on traditional concepts of users and groups, and tailored to the needs of a CVE. Our system, called WonderDAC, includes the ability to restrict movement into areas, as well as control interactions with objects. A basic WonderDAC prototype has been implemented within the Project Wonderland CVE.

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“…Facebook, YouTube, Wikipedia, Flickr). Οη Oliveira et al (2009) αλαθέξνπλ φηη ε απηνχ ηνπ είδνπο επηθάλεηα δηεπαθήο είλαη βαζηζκέλε ζην document paradigm.…”

Section: διςδιϊςταταunclassified

Εναλλακτικές Μορφές Εκπαίδευσης

Ταψής¹

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The purpose of this study is to compare the way a three-dimensional virtual environment (3DVE), such as Second Life (SL), as opposed to a two-dimensional virtual environment (2DVE), eg, the BlackBoard Vista, can be used in a distance education program in order to enhance students' learning experience (students' perceived learning, collaboration and satisfaction from the educational process).The distance learning program of the University of the Aegean, titled "Gender and New Educational and Work Environments in the Information Society", constructed the "Island" named RhodesGenderPostgrad in the virtual world SL since 2010. This virtual learning environment has been designed for educational activities (projection of educational material and the support of inter-group, inter-personal and whole class synchronous communication). An educational comparative research design was applied in order to study in which way the particular virtual world could contribute in enhancing virtual education, which is part of the mainstream of education (Chen et al, 2008). Social presence, being considered a key concept of online activities in virtual environments, is associated with the concept "communication medium" (which is the independent variable in this research) and the concepts "interaction", "perceived learning" and "satisfaction" (dependent variables in this research). The main research questions had to do with the eventual different impact that the two technological environments mentioned above had on students' communication, on their perceived learning outcome as well as on their satisfaction from it.In order to answer the research questions, an educational field experiment in the class of the graduate program of the academic year 2010-11 has been applied. The class of students was divided into two groups: the experimental group of SL and the control group of Vista. For three weeks the two groups followed the activities of the course in two different environments. The survey was implemented by using a mixed method involving quantitative and qualitative methods.The results showed that the virtual worlds can (1) enhance a sense of co-presence to the members of the class, (2) facilitate interaction and (3) increase students' satisfaction from the educational process. As this study shows that virtual worlds can support the implementation of collaborative learning models from distance, future studies may go further to a comparison between the two different technological environments' mediation effects on students' collaborative learning in the context of some suitable learning scenarios, especially designed and implemented for this particular purpose.

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Analysis Domain Model for Shared Virtual Environments

Cited by 9 publications

References 255 publications

Cyber Security Threats and Challenges in Collaborative Mixed-Reality

Cyber Security Threats and Challenges in Collaborative Mixed-Reality

Discretionary Access Controls for a Collaborative Virtual Environment

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