Towards Usable Interfaces for Proof Based Access Rights on Mobile Devices. - Marcel Heupel; Dogan Kesdogan (iNetSeC, 2011)

A generic location-based mobile application framework supporting privacy-preserving end-user tailorability. - Dhiah el Diehn I. Abou-Tair; Mohamed Bourimi; Ricardo Tesoriero; Dogan Kesdogan; Marcel Heupel (FGST, 2012)

Enhancing privacy in collaborative scenarios utilising a flexible proxy layer. - Lars Fischer 002; Marcel Heupel; Mohamed Bourimi; Dogan Kesdogan; Rafael Giménez (FGST, 2012)

Integrating multi-source user data to enhance privacy in social interaction. - Mohamed Bourimi; Ismael Rivera; Simon Scerri; Marcel Heupel; Keith Cortis; Simon Thiel (Interacción, 2012)

Towards Transparent Anonymity for User-controlled Servers Supporting Collaborative Scenarios. - Mohamed Bourimi; Marcel Heupel; Benedikt Westermann; Dogan Kesdogan; Marc Planagumà; Rafael Giménez; Fatih Karatas; Philipp Schwarte (ITNG, 2012)

Context-Aware, Trust-Based Access Control for the di.me Userware. - Marcel Heupel; Lars Fischer 002; Dogan Kesdogan; Mohamed Bourimi; Simon Scerri; Fabian Hermann; Rafael Giménez (NTMS, 2012)

Evaluation of the di.me trust metric in CRM settings. - Sophie Wrobel; Marcel Heupel; Simon Thiel (FGCT, 2013)

Trust and Privacy in the di.me Userware. - Marcel Heupel; Mohamed Bourimi; Dogan Kesdogan (HCI (3), 2013)

Privacy-preserving concepts for supporting recommendations in decentralized OSNs. - Marcel Heupel; Simon Scerri; Mohamed Bourimi; Dogan Kesdogan (MSM, 2013)

Considering Interdependent Protection Goals in Domain-Specific Contexts: The di.me Case Study. - Fatih Karatas; Marcel Heupel; Mohamed Bourimi; Dogan Kesdogan; Sophie Wrobel (ITNG, 2013)

Multilaterally Secure Communication Anonymity in Decentralized Social Networking. - Philipp Schwarte; Mohamed Bourimi; Marcel Heupel; Dogan Kesdogan; Rafael Giménez; Sophie Wrobel; Simon Thiel (ITNG, 2013)

Unlinkability support in a decentralised, multiple-identity social network. - Simon Thiel; Fabian Hermann; Marcel Heupel; Mohamed Bourimi (Open Identity Summit, 2013)

Ontology-Enabled Access Control and Privacy Recommendations. - Marcel Heupel; Lars Fischer 002; Mohamed Bourimi; Simon Scerri (MSM/MUSE, 2013)

PETs at CSCL Service: Underutilised Potentials for Privacy Enhancing Distance Education. - Mohamed Bourimi; Dogan Kesdogan; Marcel Heupel; Dhiah el Diehn I. Abou-Tair; Niki Lambropoulos (J. Univers. Comput. Sci., 2013)

Enhancing the Security and Usability of Dui Based Collaboration with Proof Based Access Control. - Marcel Heupel; Mohamed Bourimi; Philipp Schwarte; Dogan Kesdogan; Thomas Barth; Pedro González Villanueva (Distributed User Interfaces, 2013)

The di.me Trust Approach for Supporting Collaborative Scenarios. - Marcel Heupel; Mohamed Bourimi; Dogan Kesdogan (DEXA Workshops, 2014)

An Adaptive Trust Metric Allowing CRM Operators to Protect Sensitive Data During Interaction in Online Social Media. - Sophie Wrobel; Marcel Heupel; Simon Thiel (J. Digit. Inf. Manag., 2014)