As reported by the Washington Post, all the 2.2 billion Facebook users on Monday will receive a notification on their newsfeeds titled "Protecting Your Information," with a link to see what apps they use and what information they have shared with those apps.
Further, the users could shut off their applications synced with Facebook and also the third-party access to their applications completely.
In addition, the 87 million users who might have had their data shared with Cambridge Analytica will get a detailed message informing them of this.
Facebook has claimed that most of the affected users (more than 70 million) are based out of the United States.
Further, there are over a million each in the Philippines, Indonesia, and the U.K.
Zuckerberg is summoned to testify before the US Congress on April 10. Further Google CEO Sundar Pichai and Twitter CEO Jack Dorsey have also been approached to testify in connection with the online data breach.