Signal Private Messenger & Ring

[labbe5]

https://whispersystems.org/

What is Open Whisper Systems :

Open Whisper Systems is both a large community of volunteer Open Source contributors, as well as a small team of dedicated grant-funded developers. Together, we're working to advance the state of the art for secure communication, while simultaneously making it easy for everyone to use.

Privacy is possible, Signal makes it easy.

Using Signal, you can communicate instantly while avoiding SMS fees, create groups so that you can chat in real time with all your friends at once, and share media or attachments all with complete privacy. The server never has access to any of your communication and never stores any of your data.

Review :
https://www.bestvpn.com/signal-private- ... er-review/

Similar app : WhatsApp

Similar app : Ring
Installing Ring from terminal :

For Debian9 (Debian stretch derivative) :

su -

apt-get install dirmngr

sh -c "echo 'deb https://dl.ring.cx/ring-nightly/debian_9/ ring main' > /etc/apt/sources.list.d/ring-nightly-main.list"

apt-key adv --keyserver pgp.mit.edu --recv-keys A295D773307D25A33AE72F2F64CD5FA175348F84

apt-get update && sudo apt-get install ring

For Ubuntu 16.04 (Xenialdog) :

sudo sh -c "echo 'deb https://dl.ring.cx/ring-nightly/ubuntu_16.04/ ring main' > /etc/apt/sources.list.d/ring-nightly-main.list"

sudo apt-key adv --keyserver pgp.mit.edu --recv-keys A295D773307D25A33AE72F2F64CD5FA175348F84

sudo add-apt-repository universe

sudo apt-get update && sudo apt-get install ring

deb files are provided as well :
https://ring.cx/en/download/gnu-linux/manual

About Ring :
https://ring.cx/en/about/practical

Privacy and Anonymity :
Ring is a Free Software project. Its main purpose is to provide a distributed communication system which respects users' confidentiality by not having any centralized servers.

Ring uses distributed hash tables for establishing communication. This avoids keeping centralized registries of users and storing personal data.

However, we can't assure that Ring provides complete anonymity and privacy over the network. We know of two possible weaknesses.

One possible weakness is that OpenDHT collects and saves metadata. This makes it possible for eavesdroppers to observe the traffic on some DHT node and see who is talking to whom. However, they won't be able to access the contents of the conversations.

A second possible weakness is that Ring keeps the user's passphrase in memory for the length of a session. This could be the source of a vulnerability in some (rather unlikely) circumstances. We are studying how to avoid keeping it in memory.

Finally, Ring has not yet been studied thoroughly, so we cannot make categorical assertions about the effectiveness of its security and anonymity.