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i18n/cs/real-time-communication.md
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---
meta_title: "The Best Private Instant Messengers - Privacy Guides"
title: "Real-Time Communication"
title: Real-Time Communication
icon: material/chat-processing
description: Encrypted messengers like Signal and SimpleX keep your sensitive communications secure from prying eyes.
cover: real-time-communication.webp
@@ -60,6 +60,12 @@ We have some additional tips on configuring and hardening your Signal installati
[Signal Configuration and Hardening :material-arrow-right-drop-circle:](https://blog.privacyguides.org/2022/07/07/signal-configuration-and-hardening)
Contact lists on Signal are encrypted using your Signal PIN and the server does not have access to them. Personal profiles are also encrypted and only shared with contacts you chat with.
Signal supports [private groups](https://signal.org/blog/signal-private-group-system), where the server has no record of your group memberships, group titles, group avatars, or group attributes. Signal has minimal metadata when [Sealed Sender](https://signal.org/blog/sealed-sender) is enabled. The sender address is encrypted along with the message body, and only the recipient address is visible to the server. Sealed Sender is only enabled for people in your contacts list, but can be enabled for all recipients with the increased risk of receiving spam.
The protocol was independently [audited](https://eprint.iacr.org/2016/1013.pdf) in 2016. The specification for the Signal protocol can be found in their [documentation](https://signal.org/docs).
### Molly (Android)
If you use Android and your threat model requires protecting against [:material-target-account: Targeted Attacks](basics/common-threats.md#attacks-against-specific-individuals ""){.pg-red} you may consider using this alternative app, which features a number of security and usability improvements, to access the Signal network.