Credibility, Identity Resolution, and Privacy on Online Social Media Indo Belarus Bilateral Workshop on Cyber Security CDAC Noida Nov 16, 2016 Ponnurangam Kumaraguru (“PK”) Associate Professor ACM Distinguished Speaker fb/ponnurangam.kumaraguru, @ponguru
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Credibility, Identity Resolution, and Privacy on Online Social Media
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Credibility, Identity Resolution, and Privacy on Online Social
Media Indo Belarus Bilateral Workshop on Cyber Security
Washington Navy yard shootings (2013) 484,609 257,682
Polar vortex cold wave (2014) 143,959 116,141
Oklahoma Tornadoes (2013) 809,154 542,049
Total 10,074,150 4,996,448
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Credibility Modeling Feature set Features (45)
Tweet meta-data Number of seconds since the tweet; Source of tweet (mobile / web/ etc); Tweet contains geo-coordinates
Tweet content (simple)
Number of characters; Number of words; Number of URLs; Number of hashtags; Number of unique characters; Presence of stock symbol; Presence of happy smiley; Presence of sad smiley; Tweet contains `via'; Presence of colon symbol
Tweet content (linguistic)
Presence of swear words; Presence of negative emotion words; Presence of positive emotion words; Presence of pronouns; Mention of self words in tweet (I; my; mine)
Tweet author Number of followers; friends; time since the user if on Twitter; etc.
Tweet network Number of retweets; Number of mentions; Tweet is a reply; Tweet is a retweet
Tweet links WOT score for the URL; Ratio of likes / dislikes for a YouTube video
Social audience = 437,632 + 153,000 + 805,097 or less??
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Challenges
ProfessionalOpinion
Dating
Heterogeneous OSNs
Personal
Degree of Details
Quality and descriptive personal And professional information
Little personal information Descriptive opinions
Attribute Evolution
Time
Information evolved on one but not on other
{jainpari, Bangalore}
Registration with same information on both OSNs{paridhij, New Delhi}
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Generic Identity Resolution
Extract available &
discriminativefeatures
Candidate Identities
IDENTITY SEARCH IDENTITY LINKING
Pairwise Comparisons
cerc.iiitd.ac.in22
Heuristic Identity Search
Paridhi Jain, Ponnurangam Kumaraguru, and Anupam Joshi. 2013. @I seek ‘fb.me’: Identifying Users across Multiple Online Social Networks. In Proceedings of the 22nd International Conference on World Wide Web, WWW ’13 Companion. ACM, New York, NY, USA, 1259- 1268. DOI=http://dx.doi.org/10.1145/2487788.2488160 [Honorable Mention Award}