Facebook founder and owner of WhatsApp, the most popular video calling app, Mark Zuckerberg himself uses the Signals app for messaging and video calling.
According to cybersecurity researcher and expert David Walker, hackers hacked the data of Facebook users online in 2019, including the data of Facebook founder Mark Zuckerberg.
David Walker said in a tweet that Mark Zuckerberg cares about his privacy so he uses the Signals app, which is not owned by Facebook.
David Walker also posted a screenshot of Mark Zuckerberg’s Signals app account in his tweet.
On the other hand, the Signal App Company has also tweeted the news of Mark Zuckerberg using Signal App on their official Twitter account.