1. Security as Experience & Practice Supporting Everyday Security Paul Dourish Donald Bren School of Information and Computer Sciences & California Institute for Telecommunications and Information Technology UC Irvine jpd@ics.uci.edu

2. privacy and security alternative formulation of security “problem” –one that people routinely encounter and solve the question is, how? usual approach: –use security ideas to tackle privacy problems P3P, ACLs, alternative approach: –use privacy ideas to tackle security problems focus on ongoing management and situated practice

3. altman’s model borrowed a model from irwin altman –altman’s primary concern is f2f interaction management of interpersonal space, etc three key ideas –a dialectic… –… and dynamic process of … –… boundary regulation

4. privacy as a process privacy is not rule-governed an optimization –continuum of degrees of openness and closedness –managing against conflicting goals –personal, interpersonal, organizational, institutional systemic –many regulatory behavioral mechanisms –operate as a system a collective response to circumstances and needs

5. managing boundaries the destablizing effect of technology –disrupting the regulation of boundaries by setting up new boundaries or replacing existing ones by transforming the ways in which actions are mediated etc… a look at three of these boundaries –disclosure –identity –temporality

6. empirical investigation studies of everyday security practices –security as a barrier homogeneous treatment of “threats” –spammers, hackers, stalkers and marketers –delegating security to technology to individuals to organizations to institutions –security as a problem

7. our approach moving away from normative models –inherently contingent moving away from abstract descriptions –resolved in-the-moment practical action and decision-making –always part and parcel of the same setting –social, organizational, cultural, temporal context

8. technical approach supporting informed decision-making –providing a context for security actions –seeing the consequences of your actions a twin approach –visualization continual visual monitoring exploit ability to perceive structure and regularities –event-based architectures integrate information from many sources balance individual and holistic accounts event inference and analysis

9. scenario architecture JVM Application View YANCEES View publishes JVM events events routed Sequence detection Application being monitored Vavoom loader siena elvin router

10. summary security as an everyday phenomenon grounding –empirical investigations of real-world security practices –analytic development of Altman’s model technological implications –non-normative stance –integrating decision-making and action