Eighty-seven million Facebook users around the world will find out on Monday if their details were shared with Cambridge Analytica in one of the social network’s largest data breaches.
The firm said affected users would receive a detailed message on their news feeds. The majority of those whose information was shared with the data analytics firm – about 70 million – are in the US.
More than 1 million people in each of the UK, Philippines and Indonesia may also have had their personal information harvested as well as 310,000 Australian Facebook users.
All 2.2 billion Facebook users will receive a notice titled “Protecting Your Information” with a link to see what apps they use and what information has been shared with those apps. They will be able to shut off apps individually or turn off third-party access.