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Leveraging Social Relationships for Improved Internet Applications

Leveraging Social Relationships for Improved Internet Applications. Lerone Banks Ldbanks@ucdavis.edu Computer Science Dept. UC Davis October 2009. Talk Outline. Introduction Motivation Toward Social Access Control Survey Details The Big Picture: Why we should care

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Leveraging Social Relationships for Improved Internet Applications

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  1. Leveraging Social Relationships for Improved Internet Applications Lerone Banks Ldbanks@ucdavis.edu Computer Science Dept. UC Davis October 2009

  2. Talk Outline Introduction Motivation Toward Social Access Control Survey Details The Big Picture: Why we should care Future Work/Project Ideas

  3. Motivation • Social Shift of the Internet • Opportunities • Increased Interaction • Social Context • Concerns • Decreased Anonymity • Privacy • Need for Usable Security Mechanisms • Effective • Automated (as possible) • Power of Relationships • Relationship-based Decision Making

  4. Online Social Networks (OSNs) and The Facebook Phenomenon User … Friend 1 Friend 2 Friend 3 Friend N

  5. ‘Friending’ in Facebook Facebook Norms Friendship is mutual Pressure to become friends Action causes reactions ‘Friending’ is implicitly a privacy decision Key Assumption (generalizes to every current social app.) ‘Friendship’ is a symmetric relationship We know this is NOT true Unrequited love False sense of friendship Very Limited Imagine if we could not distinguish friends in the real world

  6. Online Social Networks (OSNs) and The Facebook Phenomenon Facebook Gone Wrong Negative Real World Impacts Phishing Stalking The Rise of Social Spam Social Overload (Flood of information from friends) Friendship Dilemma Desire to control the level of detail of each ‘friendship’ Users and Privacy Most users are unaware Users tend to be REactive User Privacy Paradox Privacy as a priority vs. Inaction

  7. The Culprit… (Read/Write) Access Control (or lack thereof) Access Control is anti-social...

  8. A Social Solution Tie-Strength/Relationship Quality based Access Control We do it in reality Facebook is full of relationship data Requires little user input Challenges of Measuring Tie-Strength/Relationship Quality Complex concept No standard measurement Interaction Intensity as a Starting Point Proxy for tie-strength/Relationship Quality Easily , quickly quantified Less invasive

  9. Online Social Networks (OSNs) and Facebook Friends User … Friend 1 Friend 2 Friend 3 Friend N

  10. Online Social Networks (OSNs) and Facebook Friends REVISITED User Close Friends Friend 1 Friend 2 Distant Friends … Friend 3 Friend N

  11. All Friends are NOT Created EqualTowardA Relationship Quality-based Approach to Privacy in Online Social Networks

  12. Survey Goals Goals Collect Real Usage Data Interaction counts Actual privacy settings User perceptions & intentions Make Correlations Interaction intensity and privacy (BOTH read/write access) Perceived tie-strength and type of interaction Interaction intensity and priority Value of content and level of access Interaction intensity and perceived tie-strength

  13. Survey Analysis Access Level Thresholds Interaction Type Weighting Interaction Type Correlation Causality Hypotheses i.e. being in a photo together may cause more wall posts; more conversations or wall posts may cause more photos

  14. Survey Data Basic Demographics Privacy Settings Interaction History Initiated Conversations Number of conversations initiated by the observed user with each friend Wall Posts Number of posts made by each friend Photos Number of photos tagged with the observed user and each friend

  15. Survey Questions • Please select a number representing the highest amount of information that you want Lerone Banks to see about you. • Thumbnail (Full name & Thumbnail profile photo) • Activities & Affiliations (application actions such as quiz scores, friends list, groups joined • User-generated content • Personal Information (education/work history, home address) • All profile content-This is the current default • Please select a number representing the type of information that you want to see about Lerone Banks • Do not receive activity updates and wall posts • Receive activity updates but NOT wall posts • Receive wall posts but NOT activity updates • Receive activity updates and wall posts-This is the current default • Receive activity updates marked as HIGH priority and receive wall posts marked as standard priority • Receive wall posts marked as HIGH priority and receive activity updates marked as standard priority • Receive activity updates and wall posts BOTH marked as HIGH priority • What is the strength of your relationship with Lerone Banks ?

  16. The Big Picture: Why we should care Design Tie-Strength/Relationship Quality-based DAC system for OSNs Further OSN analysis Develop Usage Models Suggestions about usage Answer Interesting Questions Join Sociology Debate Granovetter’s theories (weak ties) WWW role in erosion of human relationships

  17. New/Enhanced Applications Analysis Survey Data Friend Discovery and Link Prediction Data Properties Applications Recommendation Systems Friends, events, advertisements Relationship-based Risk Management Spam/Phishing Defense, Intrusion Detection, Bot Net Prevention Deeper Relationship Visualizations

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