TY - GEN
T1 - Photo-based authentication using social networks
AU - Yardi, Sarita
AU - Feamster, Nick
AU - Bruckman, Amy
PY - 2008
Y1 - 2008
N2 - We present Lineup, a system that uses the social network graph in Facebook and auxiliary information (e.g., "tagged" user photos) to build a photo-based Web site authentication framework. Lineup's underlying mechanism leverages the concept of CAPTCHAs, programs that are designed to distinguish bots from human users. Lineup extends this functionality to help a Web site ascertain a user's identity or membership in a certain group (e.g., an interest group, invitees to a certain event) in order to infer some level of trust. Lineup works by presenting a user with photographs and asking the user to identify subjects in the photo whom a user with the appropriate identity or group membership should know. We present the design and implementation for Lineup, describe a preliminary prototype implementation, and discuss Lineup's security properties, including possible guarantees and threats.
AB - We present Lineup, a system that uses the social network graph in Facebook and auxiliary information (e.g., "tagged" user photos) to build a photo-based Web site authentication framework. Lineup's underlying mechanism leverages the concept of CAPTCHAs, programs that are designed to distinguish bots from human users. Lineup extends this functionality to help a Web site ascertain a user's identity or membership in a certain group (e.g., an interest group, invitees to a certain event) in order to infer some level of trust. Lineup works by presenting a user with photographs and asking the user to identify subjects in the photo whom a user with the appropriate identity or group membership should know. We present the design and implementation for Lineup, describe a preliminary prototype implementation, and discuss Lineup's security properties, including possible guarantees and threats.
KW - Social networks
KW - Trust
UR - http://www.scopus.com/inward/record.url?scp=70249132568&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=70249132568&partnerID=8YFLogxK
U2 - 10.1145/1397735.1397748
DO - 10.1145/1397735.1397748
M3 - Conference contribution
AN - SCOPUS:70249132568
SN - 9781605581828
T3 - Proceedings of the ACM SIGCOMM 2008 Conference on Computer Communications -1st Workshop on Online Social Networks, WOSP'08
SP - 55
EP - 59
BT - Proceedings of the ACM SIGCOMM 2008 Conference on Computer Communications -1st Workshop on Online Social Networks, WOSP'08
T2 - ACM SIGCOMM 2008 Conference on Computer Communications - 1st Workshop on Online Social Networks, WOSP'08
Y2 - 17 August 2008 through 22 August 2008
ER -