Potential mass surveillance and privacy violations in proximity-based social applications

Proximity-based social applications let users interact with people that are currently close to them, by revealing some information about their preferences and whereabouts. This information is acquired through passive geo-localisation and used to build a sense of serendipitous discovery of people, places and interests. Unfortunately, while this class of applications opens different interactions possibilities for people in urban settings, obtaining access to certain identity information could lead a possible privacy attacker to identify and follow a user in their movements in a specific period of time. The same information shared through the platform could also help an attacker to link the victim's online profiles to physical identities. We analyse a set of popular dating application that shares users relative distances within a certain radius and show how, by using the information shared on these platforms, it is possible to formalise a multilateration attack, able to identify the user actual position. The same attack can also be used to follow a user in all their movements within a certain period of time, therefore identifying their habits and Points of Interest across the city. Furthermore we introduce a social attack which uses common Facebook likes to profile a person and finally identify their real identity

#Halal Culture on Instagram

Halal is a notion that applies to both objects and actions, and means permissible according to Islamic law. It may be most often associated with food and the rules of selecting, slaughtering, and cooking animals. In the globalized world, halal can be found in street corners of New York and beauty shops of Manila. In this study, we explore the cultural diversity of the concept, as revealed through social media, and specifically the way it is expressed by different populations around the world, and how it relates to their perception of (i) religious and (ii) governmental authority, and (iii) personal health. Here, we analyze two Instagram datasets, using Halal in Arabic (325,665 posts) and in English (1,004,445 posts), which provide a global view of major Muslim populations around the world. We find a great variety in the use of halal within Arabic, English, and Indonesian-speaking populations, with animal trade emphasized in first (making up 61% of the language's stream), food in second (80%), and cosmetics and supplements in third (70%). The commercialization of the term halal is a powerful signal of its detraction from its traditional roots. We find a complex social engagement around posts mentioning religious terms, such that when a food-related post is accompanied by a religious term, it on average gets more likes in English and Indonesian, but not in Arabic, indicating a potential shift out of its traditional moral framing

“Discover your own Ireland”: Virtual Ireland(s) for an international audience

Copyright @ 2009 University of GlasgowThe opening years of the twenty-first century can be characterised by the increased overlap between cyberspace and the physical world; virtual reality is more real than it has ever been. The rising popularity of web 2.0 forms of self-expression and user generated content such as Facebook, MySpace and blogging have resulted in it becoming the largest growth area on the internet. This essay hopes to explore how the uptake and familiarity with web technology by Irish people has overflowed into their lives and cultural expressions via the use of ‘virtual communities’. As the forums for representing the virtual self continue to evolve and multiply, debates over the multiple meanings of Irishness will thrive as the ‘new Irish’ continue to reinterpret the complexities of their identity using web technology

Information and Communication Technology Reputation for XU030 Quote Companies

By the increasing spread of information technology and Internet improvements, most of the large-scale companies are paying special attention to their reputation on many types of the information and communication technology. The increasing developments and penetration of new technologies into daily life, brings out paradigm shift on the perception of reputation and creates new concepts like esocieties, techno-culture and new media. Contemporary companies are trying to control their reputation over the new communities who are mostly interacting with social networks, web pages and electronic communication technologies. In this study, the reputation of top 30 Turkish companies, quoted to the Istanbul Stock Market, is studied, based on the information technology interfaces between company and society, such as social networks, blogs, wikis and web pages. The web reputation is gathered through 17 different parameters, collected from Google, Facebook, Twitter, Bing, Alexa, etc. The reputation index is calculated by z-index and fscoring formulations after the min-max normalization of each web reputation parameter.Comment: 5 pages 2 figure 1 table 21 refs. arXiv admin note: text overlap with arXiv:1401.754

Consequences of Content Diversity for Online Public Spaces for Local Communities

While there is significant potential for social technologies to strengthen local communities, creating viable online spaces for them remains difficult. Maintaining a reliable content stream is challenging for local communities with their bounded emphases and limited population of potential contributors. Some systems focus on specific information types (e.g. restaurant, events). Others allow many different information types. This paper reports our findings about the consequences of content diversity from a study of neighborhood-oriented Facebook groups. The findings raise questions about the viability of designs for local online communities that focus narrowly on single topics, goals, and audiences

What Twitter Profile and Posted Images Reveal About Depression and Anxiety

Previous work has found strong links between the choice of social media images and users' emotions, demographics and personality traits. In this study, we examine which attributes of profile and posted images are associated with depression and anxiety of Twitter users. We used a sample of 28,749 Facebook users to build a language prediction model of survey-reported depression and anxiety, and validated it on Twitter on a sample of 887 users who had taken anxiety and depression surveys. We then applied it to a different set of 4,132 Twitter users to impute language-based depression and anxiety labels, and extracted interpretable features of posted and profile pictures to uncover the associations with users' depression and anxiety, controlling for demographics. For depression, we find that profile pictures suppress positive emotions rather than display more negative emotions, likely because of social media self-presentation biases. They also tend to show the single face of the user (rather than show her in groups of friends), marking increased focus on the self, emblematic for depression. Posted images are dominated by grayscale and low aesthetic cohesion across a variety of image features. Profile images of anxious users are similarly marked by grayscale and low aesthetic cohesion, but less so than those of depressed users. Finally, we show that image features can be used to predict depression and anxiety, and that multitask learning that includes a joint modeling of demographics improves prediction performance. Overall, we find that the image attributes that mark depression and anxiety offer a rich lens into these conditions largely congruent with the psychological literature, and that images on Twitter allow inferences about the mental health status of users.Comment: ICWSM 201

Are Alternative Farmers Yielding Success with Online Marketing and Communication Tools for Their Social Capital and Business Viability?

To foster direct-to-consumer marketing, some alternative farmers are shifting to online tools like social media. What is unknown, however, is how they use them and what impacts use has on their business. The purpose of this study was to characterize and determine influences and outcomes of alternative farmers’ use of various online communication channels to better understand what they stand to gain (or lose) from participation in these activities as it relates to their farm business viability and social capital. Through survey data of 82 alternative farmers, it was learned their personal use of social media was highly correlated with their business use. Most of their time on the Internet was spent finding farming information and finding and interacting with customers; these activities (along with several others) were positively correlated with online bridging social capital. Personal uses of Facebook were indicative of greater social capital, whereas business uses of any social media were not. For business viability, the more Facebook Page likes their farms had, the more revenue they had, but no relationships were found between their business use of social media and customer loyalty or customer relationship. In sum, alternative farmers’ use of online communication tools was positively related to their social capital and their use of Facebook Pages was positively related to farm revenue. This study provides critical benchmark data to later determine the impact of effective use of these tools