Presented by Bettina Berendt K U Leuven or

Presented by Bettina Berendt, K. U. Leuven

or: PRIVate but not de. PRIVed ! Presented by Bettina Berendt, K. U. Leuven

The conversation Ooh, you were really drunk.

The online social network Ooh, you were really drunk.

Purposes / side effects when this conversation takes place

Private, public, anonymous, …

Summing up: Privacy is not only about your mother/employer not seeing your drinking photos

Solution 1: Just don't do it.

Solution 1: Just don't do it. de. PRIVed. . .

Encrypted content, unobservable communication

Selectivity by access control

Selectivity by access control one problem: transitive access control Friends-of-friends can see my conversations Friends can see my conversations

Consequences of actions identification of information flow

Consequences of actions profiling, surveillance & social sorting ALCOHOLIC

Consequences of actions feedback & awareness tools

Consequences of actions educational materials and communication design

Consequences of actions cognitive biases and nudging interventions time

Legal aspects ? ? time

What can we learn from offline communities? Social identities, social requirements

Remark: 3 notions of privacy (& their combinations) informational self-determination (focus on control) “the right to be let alone“ (focus on protection) Freedom from unreasonable constraints on the construction of one's identity Practice of public / private divides (focus on autonomy)

User group Belgian Privacy commission Sociaal pedagogisch werk Pedagogische begeleidingsdienst Flemish Department of Education Sirris Beuc European Schoolnet Constant Netlog Kinder- en jongerentelefoon Gezinsbond Childfocus OWASP Belgacom Ksa-Ksj-Vksj Chiro

encrypted content, unobservable communication selectivity by access control offline communities: social identities, social requirements identification of information flows legal aspects profiling feedback & awareness tools educational materials and communication design cognitive biases and nudging interventions

Ero Balsa Seda Gürses Claudia Diaz Bart Preneel Dave Clarke Frank Piessens Rula Sayaf Bram Lievens Jo Pierson Ralf De Wolf Bettina Berendt Bo Gao Tammy Schellens Martin Valcke Ellen Vanderhoven Alessandro Acquisti Fred Stutzman Jos Dumortier Eva Lievens Brendan Van Alsenoy