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  2. WhatsApp - Wikipedia

    en.wikipedia.org/wiki/WhatsApp

    Upon installation, it creates a user account using the user's phone number as the username (Jabber ID: [phone number]@s.whatsapp.net). WhatsApp software automatically compares all the phone numbers from the device's address book with its central database of WhatsApp users to automatically add contacts to the user's WhatsApp contact list.

  3. Timeline of WhatsApp - Wikipedia

    en.wikipedia.org/wiki/Timeline_of_WhatsApp

    Timeline of WhatsApp. The following is a timeline of WhatsApp, a proprietary cross-platform, encrypted, instant messaging client for smartphones. [1] Jan Koum incorporates WhatsApp in USA. [2] WhatsApp 2.0 is released on the App Store for the iPhone. [3]

  4. Reception and criticism of WhatsApp security and privacy ...

    en.wikipedia.org/wiki/Reception_and_criticism_of...

    The report found that it would be therefore possible to add arbitrary phone numbers to a group chat such that future communication becomes insecure. In October 2017, the German software company Open-Xchange criticized WhatsApp, among others, for using proprietary software and stated plans to create an open-source alternative.

  5. Comparison of cross-platform instant messaging clients

    en.wikipedia.org/wiki/Comparison_of_cross...

    A mobile-focused, phone number-based model operates on the concept of primary and secondary devices. Examples of such messaging services include: WhatsApp , Viber , Line , WeChat , Signal , etc. The primary device is a mobile phone and is required to login and send/receive messages.

  6. Open Whisper Systems - Wikipedia

    en.wikipedia.org/wiki/Open_Whisper_Systems

    Open Whisper Systems. 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.

  7. Telephone numbers in Russia - Wikipedia

    en.wikipedia.org/wiki/Telephone_numbers_in_Russia

    Telephone numbers in Russia are administered by Roskomnadzor, and Ministry of Digital Development, Communications and Mass Communications of the Russian Federation. Russia's National Numbering Plan (NNP) is a four-level telephone numbering plan with local, zone, country, and international scopes, implementing a closed numbering plan, in which the number of digits of all national significant ...

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