Privacy preserving social networking through decentralization

Cutillo, Leucio Antonio; Molva, Refik; Strufe, Thorsten

doi:10.1109/wons.2009.4801860

Cited by 98 publications

(50 citation statements)

References 4 publications

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“…This is left for future study. Alternative solutions, which employ encryption mechanisms for access control and content storage [7], not only involve complicated key management issues, but also, they are highly inefficient in terms of storage overhead, as the same data item may need to be encrypted multiple times for different users with different access rights.…”

Section: A Trusted Proxy Setmentioning

confidence: 99%

“…Recently, the issue of using decentralized infrastructures for organizing OSNs in a privacy-preserving manner, was addressed by the research community [1], [7], [16]. PeerSon [16] adopts encryption mechanisms for content storage and access control enforcement.…”

Section: Related Workmentioning

confidence: 99%

“…Peers connect each other directly, exchange the content, and then disconnect. [7] addresses privacy in OSNs by storing profile content in a P2P storage infrastructure. Each user in the OSN defines his own view ("matryoshka") of the system.…”

Section: Related Workmentioning

confidence: 99%

“…In the DHT, an entry for a user with the list of nodes in the outermost ring is added. Thus, [7] achieves both content privacy (using encryption) and anonymity of searcher and hosting nodes, yet limited content discovery and profile availability, as opposed to our approach.…”

Section: Related Workmentioning

confidence: 99%

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Privacy-Aware and Highly-Available OSN Profiles

Narendula

Papaioannou

Aberer

2010

2010 19th IEEE International Workshops on Enabling Technologies: Infrastructures for Collaborative Enterprises

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Abstract-The explosive growth of online social networks (OSNs) and their wide popularity suggest the impact of OSNs on today's Internet. At the same time, concentration of vast amount of personal information within a single administrative domain causes critical privacy concerns. As a result, privacy-conscious users feel dis-empowered with today's OSNs. In this paper, we report on an on-going research work and introduce a privacyaware decentralized OSN called porkut. Our system exploits trust relationships in the social network for decentralized storage of OSN profiles and their content. By taking users' geographical locations and online time statistics into account, it also addresses availability and storage performance issues. We finally advocate indexing of social network content and present an approach for indexing in a privacy-preserving manner.

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Section: A Trusted Proxy Setmentioning

confidence: 99%

Section: Related Workmentioning

confidence: 99%

Section: Related Workmentioning

confidence: 99%

Section: Related Workmentioning

confidence: 99%

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Privacy-Aware and Highly-Available OSN Profiles

Narendula

Papaioannou

Aberer

2010

2010 19th IEEE International Workshops on Enabling Technologies: Infrastructures for Collaborative Enterprises

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“…There are various motivations for such a decentralized architecture, foremost among these being users' privacy and autonomy from not only fellow users but also from service providers. The vision of DOSN platforms has been presented in several recent works, e.g., [1], [2], [5], [8], or Tribler.org.…”

Section: Introductionmentioning

confidence: 99%

Enabling Secure Secret Sharing in Distributed Online Social Networks

Aberer

Buchegger

et al. 2009

2009 Annual Computer Security Applications Conference

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Abstract-We study a new application of threshold-based secret sharing in a distributed online social network (DOSN), where users need a means to back up and recover their private keys in a network of untrusted servers. Using a simple threshold-based secret sharing in such an environment is insufficiently secured since delegates keeping the secret shares may collude to steal the user's private keys.To mitigate this problem, we propose using different techniques to improve the system security: by selecting only the most reliable delegates for keeping these shares and further by encrypting the shares with passwords. We develop a mechanism to select the most reliable delegates based on an effective trust measure. Specifically, relationships among the secret owner, delegate candidates and their related friends are used to estimate the trustworthiness of a delegate. This trust measure minimizes the likelihood of the secret being stolen by an adversary and is shown to be effective against various collusive attacks. Extensive simulations show that the proposed trustbased delegate selection performs very well in highly vulnerable environments where the adversary controls many nodes with different distributions and even with spreading of infections in the network. In fact, the number of keys lost is very low under extremely pessimistic assumptions of the adversary model.

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Gossip Protocols

2023

Distributed Systems

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Privacy preserving social networking through decentralization

Cited by 98 publications

References 4 publications

Privacy-Aware and Highly-Available OSN Profiles

Privacy-Aware and Highly-Available OSN Profiles

Enabling Secure Secret Sharing in Distributed Online Social Networks

Gossip Protocols

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