Linky: Visualizing user identity linkage results for multiple online social networks (Demo)

National Research Foundation (NRF) Singapore under International Research Centre @ Singapore Funding Initiativ

Hang With Your Buddies to Resist Intersection Attacks

Some anonymity schemes might in principle protect users from pervasive network surveillance - but only if all messages are independent and unlinkable. Users in practice often need pseudonymity - sending messages intentionally linkable to each other but not to the sender - but pseudonymity in dynamic networks exposes users to intersection attacks. We present Buddies, the first systematic design for intersection attack resistance in practical anonymity systems. Buddies groups users dynamically into buddy sets, controlling message transmission to make buddies within a set behaviorally indistinguishable under traffic analysis. To manage the inevitable tradeoffs between anonymity guarantees and communication responsiveness, Buddies enables users to select independent attack mitigation policies for each pseudonym. Using trace-based simulations and a working prototype, we find that Buddies can guarantee non-trivial anonymity set sizes in realistic chat/microblogging scenarios, for both short-lived and long-lived pseudonyms.Comment: 15 pages, 8 figure

"I am no number": Humanizing Digital Identities

Growing interest in decentralized web has brought into focus the need to furnish decentralized digital identities that could uproot the dominant centralized solutions, such as single logins provided by social media platforms. However, these multiple efforts to put the end user in the center of identity management rarely relate to individuals’ psychological needs related to identity enactment and construction, diminishing their chances for widespread adoption. This paper proposes a network formalization of identity theories that incorporates the specifics of identity processes online. From this model, two general, architectural principles for decentralized digital identities are drawn that might guide future work in this area

Impact of social media in sports marketing

JEL: M1 - Business Administration; M31 – Marketing; M37 - AdvertisingThe purpose of this research is to evaluate the impact of social media in the field of sports marketing. This is carried out through an in-depth analysis on sports marketing and the rising popularity of social media marketing for sports brands in the world. One such brand is Nike, Inc. This company has shifted its focus to digital marketing. As social media marketing started to explode, the traditional marketing methods such as print, radio and television have begun to slowly fade off into the sunset. The research revolves around the evolution of marketing from traditional to digital techniques over the years. After a significant literature review, a questionnaire regarding the viewing and engagement habits of consumers in Portugal regarding the advertisements of sports brands on traditional and social media was distributed on the internet and 505 responses were collected from people living in Portugal. The results of the questionnaires and the findings obtained lean towards the conclusion that traditional media still holds good value in the market place; at least in Portugal. Social media marketing can be an effective extension of traditional marketing for sports brands. This study demonstrates that sports brands do not need to eliminate traditional marketing methods altogether but must use social media as a supporting factor to their traditional media marketing techniques.O objetivo da presente pesquisa é avaliar o impacto dos media no campo do marketing desportivo. Este trabalho foi concebido através de uma profunda análise do marketing desportivo e da crescente popularidade do marketing dentro dos meios de comunicação para marcas desportivas. Uma dessas marcas é a Nike, Inc.,que recentemente mudou o seu foco para o marketing digital. Com a popularização do marketing nos media, os meios tradicionais, como a imprensa escrita, rádio e televisão, começaram a cair em desuso. Esta pesquisa aborda a evolução do marketing desde os meios tradicionais às técnicas digitais e a sua utilização no sector do desporto ao longo dos anos. Após uma vasta revisão de literatura e uma pesquisa aprofundada sobre o tema em questão, foi preparado um questionário, seguidamente distribuído através da internet. Foram obtidas 505 respostas no território português, com o objetivo de investigar o envolvimento dos participantes e dos seus hábitos com campanhas promocionais e conteúdos de marcas desportivas em meios de comunicação tradicional e social. A conclusão alcançada através da análise dos resultados dos questionários é de que os media tradicionais ainda têm uma importância relativa no mercado. As campanhas de marketing dos sociais são uma extensão eficaz dos media tradicionais para as marcas desportivas. Este estudo revela que marcas desportivas não devem excluir totalmente o uso de meios tradicionais de marketing, mas sim utilizá-los como um suporte para as suas técnicas tradicionais de comunicação