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Signal relies on centralized servers that are maintained by Signal Messenger. In addition to routing Signal's messages, the servers also facilitate the discovery of contacts who are also registered Signal users and the automatic exchange of users' public keys. By default, Signal's voice and video calls are peer-to-peer. [14]
Signal Messenger LLC was founded simultaneously with the Signal Technology Foundation and operates as its subsidiary. It is responsible for the development of the Signal messaging app [16] and the Signal Protocol. Moxie Marlinspike served as Signal Messenger's first CEO [14] until stepping down on January 10, 2022. [17]
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 .
Matthew Rosenfeld, better known by the pseudonym Moxie Marlinspike, is an American entrepreneur, cryptographer, and computer security researcher. [1] [3] Marlinspike is the creator of Signal, co-founder of the Signal Technology Foundation, and served as the first CEO of Signal Messenger LLC.
Open Whisper Systems (abbreviated OWS [7]) was a software development group [8] that was founded by Moxie Marlinspike in 2013. The group picked up the open source development of TextSecure and RedPhone, and was later responsible for starting the development of the Signal Protocol [9] and the Signal messaging app.
In the 2010s, more people started to use messaging apps on modern computers and devices like WhatsApp, WeChat, Viber, Facebook Messenger, Telegram, Signal and Line rather than instant messaging on computers like AIM and Windows Live Messenger. For example, WhatsApp was founded in 2009, and Facebook acquired in 2014, by which time it already had ...
Brian Acton (born February 17, 1972) is an American business executive and computer programmer serving as the executive chairperson of Signal Technology Foundation, which he co-founded with Moxie Marlinspike in 2018. [1] [2] Acton also serves as interim chief executive officer (CEO) of Signal Messenger LLC. [3] He was formerly employed at Yahoo!.
In November 2015, Open Whisper Systems merged TextSecure with RedPhone and renamed it as Signal. [19] In 2018, Signal Messenger was incorporated as an LLC by Moxie Marlinspike and Brian Acton and then rolled under the independent non-profit Signal Technology Foundation. Today, the Signal app is developed by Signal Messenger LLC, which is funded ...
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