CAPTCHAs

Author(s):  
Deapesh Misra

The Internet has established firm deep roots in our day to day life. It has brought many revolutionary changes in the way we do things. One important consequence has been the way it has replaced human to human contact. This has also presented us with a new issue which is the requirement for differentiating between real humans and automated programs on the Internet. Such automated programs are usually written with a malicious intent. CAPTCHAs play an important role in solving this problem by presenting users with tests which only humans can solve. This chapter looks into the need, the history, and the different kinds of CAPTCHAs that researchers have come up with to deal with the security implications of automated bots pretending to be humans. Various schemes are compared and contrasted with each other, the impact of CAPTCHAs on Internet users is discussed, and to conclude, the various possible attacks are discussed. The author hopes that the chapter will not only introduce this interesting field to the reader in its entirety, but also simulate thought on new schemes.

2015 ◽  
Vol 43 (4) ◽  
pp. 533-555 ◽  
Author(s):  
Christina Cottiero ◽  
Katherine Kucharski ◽  
Evgenia Olimpieva ◽  
Robert W. Orttung

How effective is Russian state television in framing the conflict in Ukraine that began with the Euromaidan protests and what is its impact on Russian Internet users? We carried out a content analysis of Dmitrii Kiselev's “News of the Week” show, which allowed us to identify the two key frames he used to explain the conflict – World War II-era fascism and anti-Americanism. Since Kiselev often reduces these frames to buzzwords, we were able to track the impact of these words on Internet users by examining search query histories on Yandex and Google and by developing quantitative data to complement our qualitative analysis. Our findings show that much of what state media produces is not effective, but that the “fascist” and anti-American frames have had lasting impacts on Russian Internet users. We argue that it does not make sense to speak of competition between a “television party” and an “Internet party” in Russia since state television has a strong impact in setting the agenda for the Internet and society as a whole. Ultimately, the relationship between television and the Internet in Russia is a continual loop, with each affecting the other.


2022 ◽  
Author(s):  
Amy S. Bruckman

As we interact online we are creating new kinds of knowledge and community. How are these communities formed? How do we know whether to trust them as sources of information? In other words, Should we believe Wikipedia? This book explores what community is, what knowledge is, how the internet facilitates new kinds of community, and how knowledge is shaped through online collaboration and conversation. Along the way the author tackles issues such as how we represent ourselves online and how this shapes how we interact, why there is so much bad behavior online and what we can do about it. And the most important question of all: What can we as internet users and designers do to help the internet to bring out the best in us all?


2010 ◽  
Vol 38 (2) ◽  
Author(s):  
Peter L. M. Vasterman

The Digital Pillory: The impact of the Internet on the development of scandals The Digital Pillory: The impact of the Internet on the development of scandals This article explores the consequences of the changing public arena for the way scandals develop. Scandals, defined as a process of public outrage over a (presumed) transgression of the dominant morality, used to be the domain of the professional mass media. The Internet seems to offer a more level playing field for actors who want to trigger a scandal by disclosing compromising information. But what exactly is the role of the Internet in the different stages of a scandal; which type of actors are dominant and how do media and these websites interact? A qualitative and quantitative analysis of four recent Dutch scandals shows that the Internet, more specifically semiprofessional weblogs can indeed play an important role in exposing, accusing and denouncing the culprit. But the professional media are still very important; when they refuse to adopt a disclosure by bloggers the scandal fails. The role of the Internet users is mainly reactive, but the scale of outrage on the Internet fuels the scandal process.


2011 ◽  
pp. 273-285 ◽  
Author(s):  
Alev M. Efendioglu ◽  
Vincent F. Yip

The number of Internet users around the world has been steadily growing and this growth has provided the impetus and the opportunities for global and regional e-commerce. However, as with the Internet, different characteristics (infrastructure and socio-economic) of the local environment have created a significant level of variation in the acceptance and growth of e-commerce in different regions of the world. Our research focuses on the impact of these infrastructure and socio-economic factors on e-commerce development in China and the findings provide insights into the role of culture in e-commerce, and the factors that may impact a broader acceptance and development of e-commerce in China. In this chapter, we present and discuss our findings, and propose some strategies for success for e-commerce in China.


2013 ◽  
pp. 84-102
Author(s):  
Edward Chen

This chapter discusses the Internet phenomenon known as Web 2.0. It explores Internet use, Internet users, and the continuous improvements being made to the Internet. The purpose of this chapter is to explain the impact that social networking has on the modern enterprise; particularly, when it comes to collaboration and knowledge sharing. The growth trajectory of Web 2.0 software such as social networking, blogs, tags, RSS feeds, wikis, YouTube videos, and widgets are presented, and each component is outlined in detail. Each application is also applied to a practical business setting. The benefits and challenges of each application are discussed, and examples of organizations that are implementing Web 2.0 strategies are presented. Some limitations and concerns of Web 2.0 are discussed. The chapter concludes with an examination of the implications of Web 2.0 on companies and their business and marketing strategies.


2011 ◽  
pp. 3371-3388
Author(s):  
Pippa Norris

The core issue for this study concerns less the social than the political consequences of the rise of knowledge societies; in particular, the capacity of the Internet for strengthening democratic participation and civic engagement linking citizens and government. To consider these issues, Part I summarizes debates about the impact of the Internet on the public sphere. The main influence of this development, as it is theorized in a market model, will be determined by the “supply” and “demand” for electronic information and communications about government and politics. Demand, in turn, is assumed to be heavily dependent upon the social characteristics of Internet users and their prior political orientations. Given this understanding, the study predicts that the primary impact of knowledge societies in democratic societies will be upon facilitating cause-oriented and civic forms of political activism, thereby strengthening social movements and interest groups, more than upon conventional channels of political participation exemplified by voting, parties, and election campaigning. Part II summarizes the sources of survey data and the key measures of political activism used in this study, drawing upon the 19-nation European Social Survey, 2002. Part III examines the evidence for the relationship between use of the Internet and indicators of civic engagement. The conclusion in Part IV summarizes the results and considers the broader implications for governance and democracy.


Author(s):  
Pippa Norris

The core issue for this study concerns less the social than the political consequences of the rise of knowledge societies; in particular, the capacity of the Internet for strengthening democratic participation and civic engagement linking citizens and government. To consider these issues, Part I summarizes debates about the impact of the Internet on the public sphere. The main influence of this development, as it is theorized in a market model, will be determined by the “supply” and “demand” for electronic information and communications about government and politics. Demand, in turn, is assumed to be heavily dependent upon the social characteristics of Internet users and their prior political orientations. Given this understanding, the study predicts that the primary impact of knowledge societies in democratic societies will be upon facilitating cause-oriented and civic forms of political activism, thereby strengthening social movements and interest groups, more than upon conventional channels of political participation exemplified by voting, parties, and election campaigning. Part II summarizes the sources of survey data and the key measures of political activism used in this study, drawing upon the 19-nation European Social Survey, 2002. Part III examines the evidence for the relationship between use of the Internet and indicators of civic engagement. The conclusion in Part IV summarizes the results and considers the broader implications for governance and democracy.


Author(s):  
Pippa Norris

The core issue for this study concerns less the social than the political consequences of the rise of knowledge societies; in particular, the capacity of the Internet for strengthening democratic participation and civic engagement linking citizens and government. To consider these issues, Part I summarizes debates about the impact of the Internet on the public sphere. The main influence of this development, as it is theorized in a market model, will be determined by the “supply” and “demand” for electronic information and communications about government and politics. Demand, in turn, is assumed to be heavily dependent upon the social characteristics of Internet users and their prior political orientations. Given this understanding, the study predicts that the primary impact of knowledge societies in democratic societies will be upon facilitating cause-oriented and civic forms of political activism, thereby strengthening social movements and interest groups, more than upon conventional channels of political participation exemplified by voting, parties, and election campaigning. Part II summarizes the sources of survey data and the key measures of political activism used in this study, drawing upon the 19-nation European Social Survey, 2002. Part III examines the evidence for the relationship between use of the Internet and indicators of civic engagement. The conclusion in Part IV summarizes the results and considers the broader implications for governance and democracy.


Author(s):  
Fang Zhao

Over the past decade, with the advent of the Internet, organizations have changed the way they communicate internally and externally, the way they are configured, and the way they build partnerships. Today’s complex and volatile business world calls for changes and alternatives to the old and conventional paradigm of organizational design and new ways of doing business with others. E-business becomes one of the most important forces shaping today’s business. Virtual corporations and e-partnerships become increasingly popular in the perception of managers and in business operations.


Author(s):  
Tom Postmes

This article examines the consequences of the migration of collective action into the mediated sphere. It focuses on the impact of the Internet on key psychological factors that are involved in collective action. The structure is as follows. First, the article considers the theoretical backdrop to its themes, focusing first on the classic literatures on crowds and on mediated communication, followed by more contemporary perspectives – identifying the underlying consistencies in the theoretical themes these literatures address. It identifies some key psychological factors that drive collective action. Then the article considers how the Internet changes the nature of collective action and the context in which it takes place. Subsequently, it elaborates how these changes might affect the key factors previously identified. Finally, the article takes a step back from all this and returns to the question of whether this amounts to a revolution in the way collective actions take place.


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