The main purpose of this thesis is to develop a malware threat avoidance model for users of online social networks (OSNs). To understand the research domain, a comprehensive and systematic literature review was conducted and then the research scope was established. Two design science iterations were carried out to achieve the research aim reported in this thesis. In the first iteration, the research extended the Technology Threat Avoidance Theory (TTAT) to include a unique characteristic of OSN - Mass Interpersonal Persuasion (MIP). The extended model (TTAT-MIP), focused on investigating the factors that needs to be considered in a security awareness system to motivate OSN users to avoid malware threats. Using a quantitative approach, the results of the first iteration suggests perceived severity, perceived threat, safeguard effectiveness, safeguard cost, self-efficacy and mass interpersonal persuasion should be included in a security awareness system to motivate OSN users to avoid malware threats. The second iteration was conducted to further validate TTAT-MIP through a Facebook video animation security awareness system (referred in this thesis as Social Network Criminal (SNC)). SNC is a Web-based application integrated within Facebook to provide security awareness to OSN users. To evaluate TTAT-MIP through SNC, three research techniques were adopted: lab experiments, usability study and semi-structured interviews. The results suggest that participants perceived SNC as a useful tool for malware threat avoidance. In addition, SNC had a significant effect on the malware threat avoidance capabilities of the study participants. Moreover, the thematic analysis of the semi-structured interviews demonstrated that the study participants' found SNC to be highly informative; persuasive; interpersonally persuasive; easy to use; relatable; fun to use; engaging; and easy to understand. These findings were strongly related to the constructs of TTAT-MIP. The research contributes to theory by demonstrating a novel approach to design and deploy security awareness systems in a social context. This was achieved by including users' behavioural characteristic on the online platform where malware threats occur within a security awareness system. Besides, this research shows how practitioners keen on developing systems to improve security behaviours could adopt the TTAT-MIP model for other related contexts.

This study discusses Facebook as a social network site and a social media application. It compares perceived emotional support, general life stress, and media affordance-based stress from two participant samples - one that reported using the Facebook desktop site most frequently to reach out for emotional support, and one that reported using the mobile application. The media affordance measure asked participants if perceiving a media affordance was more likely to increase or decrease their stress. In both samples, persistence was more likely to decrease stress, and personalization was more likely to increase stress. On the Facebook Desktop site, searchability was more likely to increase stress. On the Facebook mobile application, pervasiveness was more likely to decrease stress, and association to increase stress. When comparing affordances between samples, there were no significant differences found. When comparing samples, the Facebook mobile application users reported higher life stress, but there was no difference found in perception of emotional support. Within samples, there was no correlation between perceived stress and perceived emotional support. Finally, there was a significant correlation found between perception of emotional support on the site and frequency of reaching out for emotional support. On the Facebook desktop site, users reached out by public post and by private message significantly less frequently if they perceived a higher level of emotional support to be available on the site. On the Facebook mobile application, users reached out by public post significantly less frequently if they perceived a higher level of emotional support to be available on the application. No correlation was found for reaching out by private message on the Facebook mobile application.

Thesis (M.A. (Media Studies)) --University of Limpopo, 2013 / Social Networking Sites (SNS) are quickly becoming some of the most popular tools for social interaction and information exchange. This study investigates the benefits and risks of social networks by comparing two schools in Capricorn district namely Sekitla High School and Capricorn High School. Through increased internet and media literacy – ensuring all young people develop the skills to critically understand, analyse and create media content – these challenges can overcome and risks mitigated in a way that ensures the many benefits of SNS can be realised. The results reveal great significant difference in the online activity patterns between men and women. Girls tend to be in great danger than the boys. There is a disparity between the genders in terms of their attitudes, behaviours, and needs. Therefore the study concludes that there are certain risks in social networking and they can be overcome if the learners are more willing to help their teachers and parents by disclosing any information that can be a threat to them and their education by mainly using social networks for educational purposes. Key words; Gender, social networks, internet, benefits, risks, learners

Thesis (M.A. (Media Studies)) --University of Limpopo, 2013 / Social Networking Sites (SNS) are quickly becoming some of the most popular tools for social interaction and information exchange. This study investigates the benefits and risks of social networks by comparing two schools in Capricorn district namely Sekitla High School and Capricorn High School. Through increased internet and media literacy – ensuring all young people develop the skills to critically understand, analyse and create media content – these challenges can overcome and risks mitigated in a way that ensures the many benefits of SNS can be realised. The results reveal great significant difference in the online activity patterns between men and women. Girls tend to be in great danger than the boys. There is a disparity between the genders in terms of their attitudes, behaviours, and needs. Therefore the study concludes that there are certain risks in social networking and they can be overcome if the learners are more willing to help their teachers and parents by disclosing any information that can be a threat to them and their education by mainly using social networks for educational purposes. Key words; Gender, social networks, internet, benefits, risks, learners

Friendster.com was launched in California in 2002 with 20 users. Today, it has more than 27 million members and it is especially popular among Southeast Asian women. It differs from other online dating sites in that users must be approved before they can become part of a user’s personal network. This study explores what may have made the site so attractive, as well as how its users represent themselves in their personal profiles. Drawing on social constructionist and feminist theories, this thesis employed qualitative content analysis and survey methodologies to address the following questions: (1) How does Friendster.com portray its role in terms of getting people together? As a dating site or otherwise? (2) How do Southeast Asian women in these two age groups (18-21 and 27- 30) construct themselves on Friendster.com? (3) Do Southeast Asian women join Friendster.com to connect with the one? If not, what are their reasons for joining the site? (4) What are Southeast Asian women’s on- and off-line blind-date standards and practices? The research examines the choice of words and pictures from 60 Friendster users’ profiles by using qualitative content analysis as the methodology. Preliminary findings suggest that the site serves as a new safer form of an online dating service, and that its users aggressively sell themselves as a result. Moreover, the definition of blind-date is socially constructed. / Thesis (M.A.)--Wichita State University, College of Liberal Arts and Sciences, Elliott School of Communication / "May 2006." / Includes bibliographic references (leaves 74-80).

Information gathered socially online is a key feature of the growth and development of modern society. Presently the Internet is a platform for the distribution of data. Millions of people use Online Social Networks daily as a tool to get updated with social, political, educational or other occurrences. In many cases information derived from an Online Social Network is acted upon and often shared with other networks, without further assessments or judgments. Many people do not check to see if the information shared is credible. A user may trust the information generated by a close friend without questioning its credibility, in contrast to a message generated by an unknown user. This work considers the concept of credibility in the wider sense, by proposing whether a user can trust the service provider or even the information itself. Two key components of credibility have been explored; trustworthiness and expertise. Credibility has been researched in the past using Twitter as a validation tool. The research was focused on automatic methods of assessing the credibility of sets of tweets using analysis of microblog postings related to trending topics to determine the credibility of tweets. This research develops a framework that can assist the assessment of the credibility of messages in Online Social Networks. Four types of credibility are explored (experienced, surface, reputed and presumed credibility) resulting in a credibility hierarchy. To determine the credibility of messages generated and distributed in Online Social Networks, a virtual network is created, which attributes nodes with individual views to generate messages in the network at random, recording data from a network and analysing the data based on the behaviour exhibited by agents (an agent-based modelling approach). The factors considered for the experiment design included; peer-to-peer networking, collaboration, opinion formation and network rewiring. The behaviour of agents, frequency in which messages are shared and used, the pathway of the messages and how this affects credibility of messages is also considered. A framework is designed and the resulting data are tested using the design. The resulting data generated validated the framework in part, supporting an approach whereby the concept of tagging the message status assists the understanding and application of the credibility hierarchy. Validation was carried out with Twitter data acquired through twitter’s Application Programming Interface (API). There were similarities in the generation and frequency of the message distributions in the network; these findings were also recorded and analysed using the framework proposed. Some limitations were encountered while acquiring data from Twitter, however, there was sufficient evidence of correlation between the simulated and real social network datasets to indicate the validity of the framework.

Orientador: Leonardo de Souza Mendes / Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Eletrica e de Computação / Made available in DSpace on 2018-08-15T01:26:13Z (GMT). No. of bitstreams: 1 Ignatowicz_Eder_M.pdf: 4218914 bytes, checksum: 14f0712c40656a24b891d1c63cc5331d (MD5) Previous issue date: 2009 / Resumo: Guiado pelo crescente número de projetos de cidades digitais, o objetivo principal deste trabalho é propor uma arquitetura e um modelo organizacional de intercâmbio de informações em uma cidade digital construindo uma infra-estrutura de disponibilização e consumo de serviços pelos cidadãos. Este modelo tem como objetivo promover o acesso do cidadão aos serviços da cidade digital e prover meios de fácil e ampla disponibilização e divulgação destes serviços a iniciativa pública e privada por meio da arquitetura apresentada neste trabalho. Desta forma, podemos garantir que a informação ou serviço possa ser rapidamente localizada e transmitida entre os setores públicos e privado, criando assim um impulso na economia local. Este modelo é validado por meio do desenvolvimento de um portal comunitário construído sobre uma rede peer-to peer (P2P) e baseado no modelo MVC (Model-View-Controller) modificado para quatro camadas. Este portal utiliza um middleware para interconectar os mais variados segmentos da sociedade. / Abstract: Support by the growing of digital cities projects, the main goal of this work is to propose an architecture and an organizational model of information exchange in a digital city building an infrastructure of deploying and consumption of services by citizens. This model aim to promote citizen access to city services and provide easy and wide digital media availability and dissemination of these services to public and private initiative through the architecture presented. So we can ensure that the information or service can be quickly located and exchanged between the public and private sectors, thus creating a rise in the local economy. This model is validated through the development of a Community Portal built on a peer-to peer (P2P) and based on the MVC (Model-View-Controller) modified(four layers). This website uses a middleware to interconnect the different segments of society. / Mestrado / Telecomunicações e Telemática / Mestre em Engenharia Elétrica

Individuals engage in competitive and cooperative interactions with conspecifics. Furthermore, within any population of interacting individuals there are typically consistent differences among-individuals in behavioural traits. Understanding the importance of both these types of individual-specific behaviours allows us to understand why populations are structured as they are, why individuals show apparently limited behavioural flexibility, and how these elements link to population-level properties. I used extensive video camera monitoring of a population of wild field crickets (Gryllus campestris) to study the interactions and behaviours of uniquely identified individuals. I studied the shyness, activity and exploration of individuals of this population across contexts: from young to old and between captivity and the wild. This allowed me to confirm that individuals were relatively consistent across their adult lifetimes for all three traits, but only consistent between captivity and the wild for activity and exploration. I then found that high activity levels were positively related to high mating rates and short lifespans. Crucially, lifetime mating success was not related to activity level, indicating that the trade-off between lifespan and mating success was sufficient to allow variation in activity level to persist across generations. I also found that cricket social network structure is stable across generations despite the complete turnover of individuals every year. This social network structure influences sexual selection, with some male crickets heavily involved in networks of both pre- and post-copulatory competition, yet males are unable to use pre-copulatory competition to avoid post-copulatory competition. Additionally, positive assortment by mating rate between males and females may reduce the fitness of males with high mating rates, as they face stronger sperm competition. Finally, I used actor-based models to determine the factors predicting cricket social network structure and to test and reject the social-niche hypothesis for the maintenance of among-individual variation in behaviour. I also demonstrated that little else is needed in a stochastically changing network aside from positive assortment by mating rate to simulate a population with a similar skew in mating success to the one observed in the real cricket population. These results give insights into the importance of trade-offs and stochasticity in maintaining the extensive variation in the natural world.

The thesis focuses on the social media strategy and marketing communication on Facebook. The main goal of the thesis is to pursue an analysis of all the steps and parts of the strategy and marketing communication on Facebook at a specific organisation. The theoretical part starts with a general introduction of the internet marketing. The thesis further looks into the topic of social networks, their development, definition, principles and benefits for a company. A detailed study of each step of the social media strategy and main parts of the marketing communication on Facebook follows. The practical part includes the analysis of the suggested strategy and all parts of the marketing communication on Facebook. In case the practical part brings some imperfect results, the author adds data based on the summary of the theoretical part. The final analysis extended by author´s suggestions can act as a practical guide for similar projects.

This study examines factors associated with the frequency with which users of location-based social networks (LBSNs) "check-in" with their "friends." In addition to a variety of control factors (i.e., sex homophily, race homophily, geographic proximity, length of friendship, and "friendship" type, including non-romantic friend, romantic partner, and family), the central factors of interest were users' background and attitude homophily with, and relational closeness to, their "friends." Results demonstrate that relational closeness and "friendship" type (i.e., romantic partner) were significantly, positively associated with "check-in" frequency.