Reputation systems have been used to support users in making decisions under uncertainty or risk that is due to the autonomous behavior of others. Research results support the conclusion that reputation systems can protect against exploitation by unfair users, and that they have an impact on the prices and income of users. This observation leads to another question: can reputation systems be us...

This thesis’ goal is to reduce the attack surface of the existing Web Public Key Infrastructure (PKI) by applying user trust as in real world scenarios of human trust establishment. Reputation systems can be used to exchange Certification Authority (CA) trust information and lower the risk on relying on malicious CAs. The matter in question is connection trust, determining whether a SSL/TLS con...

Electronic commerce has added a new complex issue to international trade. It is based upon the assumption that buyers and sellers conduct business with very little information about each other. This lack of information about the contracting parties reputation makes risk assessment more complex and the importance of trust in online contracting becomes increasingly important. The difficulties and...

The pervasive presence of online media in our society has transferred a significant part of political deliberation to online forums and social networking sites. This article examines popularity, reputation, and social influence on Twitter using large-scale digital traces from 2009 to 2016. We process network information on more than 40 million users, calculating new global measures of reputatio...

Purpose: The purpose of this research is to examine the relationship between risk perceptions (financial, performance, social, time and privacy risks) and risk reduction strategies (brand loyalty, word of mouth, past experience, money back guarantee, store image, shopping, major brand image, free sample, website reputation, and payment security) in online group buying context. Design/methodolog...

In this study, the impact of corporate social responsibility (CSR ) disclosure on idiosyncratic risk has been investigated concerning three stakeholder theory, information asymmetry, and risk management. It also goes further and explores the impact of some corporate governance mechanisms such as ownership structure, board characteristics, and incentive contracts on this relationship. To achieve...

Centralized reputation systems use stars and reviews and thus require algorithm secrecy to avoid manipulation. In autonomous open source decentralized systems this luxury is not available. We create a reputation network for decentralized marketplaces where the trust each user gives to the other users is quantifiable and expressed in monetary terms. We introduce a new model for bitcoin wallets i...

Risk relief services (RRSs), as complementary to online trust promoting services, are becoming versatile options for risk reduction in online consumer-to-consumer auctions. In this paper, we identify factors that affect the behavior of buyers in an online auction market who had to either adopt or not adopt online escrow services (OES). An experimental C2C auction system with embedded decision s...