Investigating OSN Users' Privacy Strategies

Introduction

Research Software

Empirical Study

Tracking Tool Visualizing Tracked Data

Findings Suggestions for Design?

Summary of Results

Summary of Results

● Research software facilitates understanding of OSN users’ privacy strategies

● Privacy strategies are not limited to provided privacy features

Introduction

Research SoftwareChallenge 1:Privacy strategies do not only manifest in usage of provided privacy settings

Challenge 2:Limits of self-reporting, log data

Challenge 3:Abundance of data

ROSE

Empirical Study

Empirical Study

112 Participants12 ParticipantsEmpirical Study

Grouping ExerciseAlternative Strategies

Empirical Study

● 33% created at least one list

● only 54% (of these 33%) used lists for sharing

Empirical Study

Place of interaction

Relationship

Empirical Study Participants

Empirical Study

P9: “I either share with all my friends or I

don’t share at all” P1: “I was thinking about sharing a

picture - in the end I didn’t because I didn’t want some people to

see it.”

* significant difference p < 0,1 ** significant difference p < 0,05

Using FL (n=20)

Not Using FL (n=75)

p-value

Alternative Strategies m (sd) m (sd) p

Withholding Information

Frequency of Posting (1=“several times a day”” to 7=“less than once a month”)

5,4 (1,5) 6,1 (1,4) 0,062*

Motivation to Share:(1=”strongly disagree” to 6=”strongly agree”)

3,5 (1,4) 2,8 (1,3) 0,049**

Get vs. share information:(1=”primarily to get information” to 7=”primarily to share information”)

3,4 (1,8) 3 (1,9) 0,360

Empirical Study

Publishes Content

Private Message

Group Message

Post

Others Timeline

Group

1:1

1:n

1:nAlice

a priori

in situ

1:n

in situ

in situ

a priori

Empirical Study

Summary of Results

Summary of Results

● Research software facilitates understanding of OSN users’ privacy strategies

● Privacy strategies are not limited to provided privacy features

Thanks for Listening!

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