PARIS, FRANCE – JANUARY 13 In this photo illustration, the logos of social media applications Messenger, WhatsApp, Twitter, Signal and Telegram are displayed on the screen of an iPhone on January 13, 2021 in Paris, France. Since WhatsApp announced a change to its privacy rules, users are moving to other encrypted messaging, 25 million users have joined Telegram secure messaging in the past 72 hours, Russian founder Pavel Durov announced on Tuesday.