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2. WhatsApp - Wikipedia

   en.wikipedia.org/wiki/WhatsApp

   In August 2013, WhatsApp added voice messages to their apps, giving users a way to send short audio recordings directly in their chats. In January 2015, WhatsApp launched a web client that allowed users to scan a QR code with their mobile app, mirroring their chats to their browser.

3. QR code - Wikipedia

   en.wikipedia.org/wiki/QR_code

   The QR code system was invented in 1994, at the Denso Wave automotive products company, in Japan. The initial alternating-square design presented by the team of researchers, headed by Masahiro Hara, was influenced by the black counters and the white counters played on a Go board; the pattern of position detection was found and determined by applying the least-used ratio (1:1:3:1:1) in black ...

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

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

   On December 17, 2019, WhatsApp fixed a security flaw that allowed cyber attackers to repeatedly crash the messaging application for all members of group chat, which could only be fixed by forcing the complete uninstall and reinstall of the app. The bug was discovered by Check Point in August 2019 and reported to WhatsApp. It was fixed in ...

5. End-to-end encryption - Wikipedia

   en.wikipedia.org/wiki/End-to-end_encryption

   End-to-end encryption (E2EE) is a private communication system in which only communicating users can participate.As such, no one, including the communication system provider, telecom providers, Internet providers or malicious actors, can access the cryptographic keys needed to converse.

6. Scan (company) - Wikipedia

   en.wikipedia.org/wiki/Scan_(company)

   Snap Inc. (2014–present) Scan is a mobile app development company headquartered in Provo, Utah, United States. The company was founded in January 2011 by Garrett Gee together with his college friends Ben Turley and Kirk Ouimet. [1] The company, owned and operated by Scan, Inc, [2] was acquired by Snapchat in 2014 for $54 million.

7. Signal (messaging app) - Wikipedia

   en.wikipedia.org/wiki/Signal_(messaging_app)

   Signal's app icon may be changed from with a variety of colour themes for customization and the application name can also be customized. Upcoming features includes hiding spoilers as well adding other users via QR code. Signal excludes users' messages from non-encrypted cloud backups by default.

8. WhatsApp snooping scandal - Wikipedia

   en.wikipedia.org/wiki/WhatsApp_snooping_scandal

   On October 30, 2019, WhatsApp 's parent company Facebook, Inc. confirmed that Pegasus, a sophisticated snooping software developed by Israel's NSO Group, was used to target Indian journalists, activists, lawyers and senior government officials. The journalists and activists are believed to have been targets of surveillance for a two-week period ...

9. Comparison of cross-platform instant messaging clients

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

   However, the mobile app serves as the primary device, due to the end-to-end encryption architecture. 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 Wire: Email or Phone number Yes Yes: No Yes: Yes Client Registration requirement