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  2. WhatsApp - Wikipedia

    en.wikipedia.org/wiki/WhatsApp

    WhatsApp (officially WhatsApp Messenger) is an American instant messaging (IM) and voice-over-IP (VoIP) service owned by technology conglomerate Meta. [13] It allows users to send text, voice messages and video messages, [14] make voice and video calls, and share images, documents, user locations, and other content.

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

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

    In May 2012 security researchers noticed that new updates of WhatsApp sent messages with encryption, [40] [41] [42] but described the cryptographic method used as "broken." [43] [44] In August of the same year, the WhatsApp support staff stated that messages sent in the "latest version" of the WhatsApp software for iOS and Android (but not BlackBerry, Windows Phone, and Symbian) were encrypted ...

  4. List of SIP response codes - Wikipedia

    en.wikipedia.org/wiki/List_of_SIP_response_codes

    Extended search being performed may take a significant time so a forking proxy must send a 100 Trying response. [1]: §21.1.1 180 Ringing Destination user agent received INVITE, and is alerting user of call. [1]: §21.1.2 181 Call is Being Forwarded Servers can optionally send this response to indicate a call is being forwarded.

  5. Encryption: Why texting your friends on WhatsApp could soon ...

    www.aol.com/encryption-why-texting-friends...

    It could lead to a situation where it might very soon be illegal to message friends on WhatsApp. WhatsApp has sparked new fears that it could be banned in the UK as the Online Safety Bill heads ...

  6. Instant messaging - Wikipedia

    en.wikipedia.org/wiki/Instant_messaging

    A classic example of instant messaging on a desktop computer: the left window of this software showing a list of contacts ("buddy list") and the right window an active IM conversation An example of instant messaging on mobile, featuring the exchange of pictures and audio on top of text

  7. List of HTTP status codes - Wikipedia

    en.wikipedia.org/wiki/List_of_HTTP_status_codes

    As the HTTP/1.0 standard did not define any 1xx status codes, servers must not [note 1] send a 1xx response to an HTTP/1.0 compliant client except under experimental conditions. 100 Continue The server has received the request headers and the client should proceed to send the request body (in the case of a request for which a body needs to be ...

  8. Text messaging - Wikipedia

    en.wikipedia.org/wiki/Text_messaging

    SMS messaging was used for the first time on 3 December 1992, [12] when Neil Papworth, a 22-year-old test engineer, used a computer to send the text message "Merry Christmas" via the Vodafone network to the phone of Richard Jarvis, [13] [14] who was at a party in Newbury, Berkshire celebrating the event.

  9. Fix sending and receiving issues with third-party email apps

    help.aol.com/articles/cant-send-or-receive-email...

    If your third-party email app is having issues connecting, sending, or receiving emails, you may need to reconfigure your account or update the app. Use these steps to identify and fix the source of the problem. Troubleshoot any problems with your account