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Sarah Jamie Lewis 1 year ago
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# Cwtch: Anonymous, Decentralized, Group Messaging

![](https://git.openprivacy.ca/avatars/5?s=140)

# Cwtch: Anonymous, Decentralized, Group Messaging
Communications metadata is known to be exploited by various adversaries to undermine the security of systems, to track victims and to conduct large scale social network analysis to feed mass surveillance. Metadata resistant tools are in their infancy and research into the construction and user experience of such tools is lacking.

We present Cwtch, and extension of the metadata resistant protocol Ricochet to support asynchronous, multi-peer group communications through the use of discardable, untrusted, anonymous infrastructure.

We present Cwtch, and extension of the metadata resistant protocol [Ricochet](https://ricochet.im) to support asynchronous, multi-peer group communications through the use of discardable, untrusted, anonymous infrastructure.

It is important to identify and understand that metadata is ubiquitous in communication protocols, it is indeed necessary for such protocols to function efficiently and at scale. However, information that is useful to facilitating peers and servers, is also highly relevant to adversaries wishing to exploit such information.

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* **Pattern of Life** - Discovering which communications are cyclical and predictable. (e.g. Alice calls Eve every Monday evening for around an hour.)


More Information: [https://cwtch.im](https://cwtch.im)
More Information: [https://cwtch.im](https://cwtch.im)

![](https://git.openprivacy.ca/avatars/5?s=140)

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