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HOSN - Hybrid Online Social Network- This is a Mockup

"Tweet beyond the cage of commercial social networks"

This repository contains an Android app, as a proof of concept for HOSN, builds on top of Twitter and provides users with additional means of privacy control.


The idea of HOSNs is to combine a commercial online social network (COSN) and a privacy-preserving online social network (PPOSN) . That combination enables to utilize both the market penetration of COSNs and the anonymity of PPOSNs. The COSN serves as base network and provides the user base as well as the connectivity between these users. The PPOSN is established above, providing the users with means of communication beyond the knowledge of the provider of the COSN. Simply put, the objective of HOSN is providing the users of COSNs with additional means of privacy control by establishing a PPOSN on top of the COSN.


[1] Wainakh et al. (2019) Tweet beyond the Cage: A Hybrid Solution for the Privacy Dilemma in Online Social Networks

[2] RTG Privacy and Trust for Mobile Users - Privacy Protection via Hybrid Social Networks


  • Aidmar Wainakh - guidance and suggestions during development

  • Jörg Daubert - guidance and suggestions during development

  • Tim Grube - concept development

  • Carsten Porth - development of first prototype within his Master Thesis


Aidmar Wainakh (