Online social networks (OSN) are a permanent presence in today's personal and
professional lives of a huge segment of the population, with direct consequences to offline …

The use of online social networks, such as Facebook and Twitter, has grown at a
phenomenal rate. These platforms offer services that support interactions via messaging …

Current Online social networks (OSN) are web services run on logically centralized
infrastructure. Large OSN sites use content distribution networks and thus distribute some of …

Online social networks (OSNs) such as Facebook and Google+ have transformed the way
our society communicates. However, this success has come at the cost of user privacy; in …

A multitude of privacy breaches, both accidental and malicious, have prompted users to
distrust centralized providers of online social networks (OSNs) and investigate decentralized …

The evolution of the role of online social networks in the Web has led to a collision between
private, public and commercial spheres that have been inevitably connected together in …

Because of growing popularity of Online Social Networks (OSNs) and huge amount of
sensitive shared data, preserving privacy is becoming a major issue for OSN users. While …

Health-care management systems are of great relevance because they provide an easy and
quick management of all aspects regarding a patient, not necessarily medical. Furthermore …

Distributed online social networks (DOSNs) were first proposed to solve the problem of
privacy, security, and scalability. A significant amount of research was undertaken to offer …

In decentralized P2P networks, many security mechanisms still rely on a central authority.
This centralization creates a single point of failure and does not comply with the P2P …