Signal app

• Facebook-owned WhatsApp recently updated its privacy policy, triggering a mass digital migration of users from the messaging platform to its rivals. The switch gained momentum after the Elon Musk urged his followers on Twitter to install the Signal app.


• Signal is a cross-platform centralized encrypted messaging service developed by the Signal Technology Foundation and Signal Messenger LLC. The non-profit Signal Foundation was launched in 2018 with initial funding of $50 million from Brian Acton.

• It uses the Internet to send one-to-one and group messages, which can include files, voice notes, images and videos. It can also be used to make one-to-one and group voice and video calls.

• Signal uses standard cellular telephone numbers as identifiers and secures all communications to other Signal users with end-to-end encryption.

Recent Development:

• On 7 January 2021, Signal saw a surge in new user registrations due to a WhatsApp privacy policy change and a Signal endorsement by Elon Musk and Edward Snowden via Twitter.

• Between 12 and 14 January 2021, the number of Signal installations listed on Google Play increased from over 10 million to over 50 million.

• On 15 January 2021, due to the surge of new users, Signal was overwhelmed with the new traffic and was down for all users. The service was later restored.


Mains Paper 3: Science and tech

Prelims level: Signal app

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