On behalf of the CoSDEO 2020 Organizing Committee, it is our great pleasure to welcome you to the seventh CoSDEO Workshop in conjunction with the IEEE International Conference on Pervasive Computing and Communications (PerCom 2020). This year's edition focuses on Privacy and security in digital assistants. This years program has selected exciting papers embracing a diverse perspectives across the field.

Putting together CoSDEO 2020 has been a huge team effort and we have been lucky to have the support from a great TPC constituted from well recognized and experienced scientists in the field. A special thank goes also to the PerCom 2020 workshop chairs, Amy Murphy and Edison Thomaz who have supported us excellently throughout the whole process.

Regarding the submission and review process for CoSDEO 2020, each paper was reviewed by at least three to six technical program committee (TPC) members. This year, after a highly competetive review process, 3 excellent papers were finally selected for inclusion at the workshop. We have further improved the workshop by including three invited talks, one position talk, as well as a Keynote presentation. The topics of the papers reflect the wide spectrum research around usable security and more specifically around Privacy and Security in digital assistants.

We hope that you will find this program interesting and thought-provoking and that the workshop will provide you with a valuable opportunity to share ideas with other researchers and practioners from institutions around the world.

February 2020,

Tom Bäckström, Maija Poikela and Stephan Sigg
(CoSDEO 2020 workshop co-chairs)

Organizing Committee
	Tom Bäckström (Aalto University, Finland)
	Maija Poikela (Fraunhofer Institut für Angewandte und Integrierte Sicherheit, Finland)
	Stephan Sigg (Aalto University, Finland)

Technical Program Committee

Florian Alt	Bundeswehr University Munich	Germany
Tom Bäckström	Aalto University	Finland
Zinaida Benenson	Friedrich-Alexander-Universität Erlangen-Nürnberg	Germany
Arne Brüsch	TU Braunschweig	Germany
Mads Græsbøll Christensen	Aalborg University	Denmark
Alexandra Craciun	XMOS	Finland
Nicholas Evans	EURECOM	France
Sascha Fahl	Saarland University	Germany
Kassem Fawaz	University of Wisconsin-Madison	USA
Thang Hoang	University of South Florida	USA
Ansgar Kellner	TU Braunschweig	Germany
Markus Miettinen	Technische Universität Darmstadt	Germany
Andreas Nautsch	EURECOM	Germany
Le Nguyen Ngu Nguyen	Aalto University	Finland
Petteri Nurmi	University of Helsinki	Finland
Maija Poikela	Fraunhofer Institut für Angewandte und Integrierte Sicherheit	Finland
Dominik Schürmann	TU Braunschweig	Germany
Stephan Sigg	Aalto University	Finland
Christian Stransky	Leibnitz University Hannover	Germany
Massimiliano Todisco	EURECOM	France
Isabel Transcoso	L2F	Finland
Hien Thi Thu Truong	NEC Laboratories Europe	Germany
Dominik Wermke	Leibnitz University Hannover	Germany
Yixin Zou	University of Michigan	Finland