However, only the content of the communication is protected from surveillance. Silence closes this security loophole and encrypts the text messages. If the internet has been shut down but the telephone network and SMS text messaging are still working, the Silence app can provide secure text communication.Ĭlassic SMS communication is unencrypted, and can easily be accessed and read by third parties. It came to prominence as part of the messaging apps Signal and WhatsApp, and is well-regarded by security researchers. But the app now uses the Signal protocol, which is considered secure. In the past, there have been security concerns about the encryption process used by Bridgefy. Bridgefy enables internet-free communication between smartphones Image: īridgefy, which is not open source, is distributed by a US-based company of the same name, and financed through advertising. This is also presumably why Bridgefy was heavily used in recent years by the protest movement in Hong Kong. This app follows a similar approach to Briar, allowing communication through a mesh network that is also established via Bluetooth and Wi-Fi.īridgefy can be used on both Android and iOS (Apple) devices, an advantage over Briar. The tool is funded by organizations that support internet freedom, like the global Access Now or the Open Technology Fund based in the US.īriar is available via the Google Play Store or open-source software repository F-Droid. However, anyone who is part of a mesh network should be aware that they are also automatically sending data that they haven't seen, and that this data may potentially violate the law.īriar is a free, open-source app. The internet connection is usually made via Tor, which anonymizes it so no one outside the network can read the communications at this point, either. If one person in the mesh network still has a functioning connection to the internet - because they are using a foreign SIM card, for example - they can share their access with all the people connected to the network. This technology is called a mesh network. As a result, communication isn't just limited to two people a great many people can communicate with each other, over greater distances. Briar establishes an encrypted, anonymous Tor communications network Image: īriar's greatest strength is its ability to bring together a large number of these direct connections to create a network. Enemies, secret services, mobile phone providers or hackers won't be able to read your messages. Its big advantage is the direct connection, which is secured by end-to-end encryption. The disadvantage of this method is that it has a very short range - about 10 meters (around 30 feet) with Bluetooth, and potentially up to 100 meters with Wi-Fi. Two smartphones connect directly via Bluetooth or Wi-Fi without accessing any existing infrastructure such as network routers or cellphone networks, for example. Briar: Bluetooth or Wi-Fi, smartphone to smartphoneīriar is an Android app that enables so-called peer-to-peer (P2P) communication. Through targeted attacks on radio and TV stations, including Kyiv's TV tower, the Russian army is trying to prohibit Ukrainians from accessing independent information.īut if your internet and messenger apps stop working, there are still ways to communicate. Russia is trying to destroy Ukraine's entire communication infrastructure.
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