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The Signal Protocol (formerly known as the TextSecure Protocol) is a non-federated cryptographic protocol that provides end-to-end encryption for voice and instant messaging conversations. [2] The protocol was developed by Open Whisper Systems in 2013 [ 2 ] and was introduced in the open-source TextSecure app, which later became Signal .
The term "end-to-end encryption" originally only meant that the communication is never decrypted during its transport from the sender to the receiver. [9] For example, around 2003, E2EE has been proposed as an additional layer of encryption for GSM [10] or TETRA, [11] in addition to the existing radio encryption protecting the communication between the mobile device and the network infrastructure.
Telegram also has social networking features, allowing users to post stories, create large public groups with up to 200,000 members, or share one-way updates to unlimited audiences in so-called channels. [11] Telegram was founded in 2013 by Nikolai and Pavel Durov.
Signal is also distributed for iOS and desktop programs for Windows, macOS, and Linux. Registration for desktop use requires an iOS or Android device. [21] [22] Signal uses mobile telephone numbers to register and manage user accounts, though configurable usernames were added in March 2024 to allow users to hide their phone numbers from other ...
As of March 2022, the most used instant messaging apps and services worldwide include: Signal with 100 million, Line with 217 million, Viber with 260 million, Telegram with 700 million, WeChat with 1.2 billion, Facebook Messenger with 1.3 billion, and WhatsApp with 2.0 billion users. [87]
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Thailand Post discontinued telegram service on 30 April 2008, at 20.00 local time. Turkey: Yes – PTT has been providing telegram service in Turkey since 1855. Ukraine: No 2018 Ukrtelecom discontinued telegram service on 1 March 2018. United Kingdom: No 1982 After 1982, British Telecom maintained a telemessage service to replace telegrams.
Terrorgram (sometimes stylised in all caps) [2] is a far-right, decentralized network [1] of Telegram channels and accounts that subscribe to or promote militant accelerationism. Terrorgram channels are neo-fascist in ideology, and regularly share instructions and manuals on how to carry out hate crimes, mass shootings and target critical ...