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Title: Leveraging social feedback to verify online identity claims
Authors: Sirivianos, Michael 
Kim, Kyungbaek 
Gan, Jianwei 
Yang, Xiaowei 
Major Field of Science: Engineering and Technology
Field Category: Computer and Information Sciences
Keywords: Anonymity;Online credential;Online identity;Online social network;Privacy
Issue Date: Mar-2014
Source: ACM Transactions on the Web, 2014, vol. 8, no. 2, art. no. 9
Volume: 8
Issue: 2
Journal: ACM Transactions on the Web (TWEB) 
Abstract: Anonymity is one of the main virtues of the Internet, as it protects privacy and enables users to express opinions more freely. However, anonymity hinders the assessment of the veracity of assertions that online users make about their identity attributes, such as age or profession. We propose FaceTrust, a system that uses online social networks to provide lightweight identity credentials while preserving a user's anonymity. FaceTrust employs a "game with a purpose" design to elicit the opinions of the friends of a user about the user's self-claimed identity attributes, and uses attack-resistant trust inference to assign veracity scores to identity attribute assertions. FaceTrust provides credentials, which a user can use to corroborate his assertions. We evaluate our proposal using a live Facebook deployment and simulations on a crawled social graph. The results show that our veracity scores are strongly correlated with the ground truth, even when dishonest users make up a large fraction of the social network and employ the Sybil attack.
ISSN: 1559-1131
DOI: 10.1145/2543711
Rights: © ACM
Type: Article
Affiliation : Cyprus University of Technology 
Chonnam National University 
Duke University 
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