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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. 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. [69] 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. [70]

  4. Comparison of cross-platform instant messaging clients

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

    A valid phone number or email address is not required for registration & login. However, the mobile app serves as the primary device, due to the end-to-end encryption architecture. [120] Yes No No No Trillian: No Yes No No Yes Viber: Phone number No No No No WeChat: Phone number or QQ number No No No No No WhatsApp: Phone number No Yes No No No ...

  5. WhatsApp resolves issue that exposed some users' phone ...

    www.aol.com/news/whatsapp-resolves-issue-exposed...

    The fix comes days after a researcher revealed that the phone number of WhatsApp users who created a simplified link to allow others to chat with them or join a group appeared in search results ...

  6. Instant messaging - Wikipedia

    en.wikipedia.org/wiki/Instant_messaging

    However, the open protocol IRC continued to be popular by the millenium, and its most popular graphical app was mIRC. [ 28 ] While instant messaging was mainly in use for consumer recreational purposes, in 1998 IBM launched their Lotus Sametime instant messenger software, the first popular example of enterprise-grade instant messaging. [ 29 ]

  7. Signal Protocol - Wikipedia

    en.wikipedia.org/wiki/Signal_Protocol

    signal.org /docs. 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 ...

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