Fb has stated extra customers might have been affected by a knowledge leak than beforehand thought, bringing the overall to 87 million.
Earlier estimates thought simply over 50m customers had been affected by Cambridge Analytica accessing knowledge.
Many of the 87m individuals whose knowledge was shared with the political consultancy, which labored on Donald Trump’s presidential marketing campaign, had been in america, Fb’s chief expertise officer Mike Schroepfer wrote in a weblog put up.
Mr Schroepfer didn’t element how Fb got here to find out the upper estimate of 87m customers affected, however stated Fb would inform individuals if their data might have been improperly shared with Cambridge Analytica.
Fb is taking steps to limit the private knowledge accessible to third-party app builders, he added.
The biggest social media firm on the earth – with a billion customers – has seen its shares plunge because it faces anger from customers, advertisers and politicians after a collection of “faux information”, election-meddling and privateness scandals.
Fb’s chief government Mark Zuckerberg will testify over the matter subsequent week earlier than the US Home Vitality and Commerce Committee, the panel stated on Wednesday.
Mr Zuckerberg has to date resisted calls from the British authorities to face its digital committee over the information leak, which incorporates allegations in regards to the web site getting used to affect the EU Referendum.
Fb shares had been down 1.four% on Wednesday to $153.90.
They’re down greater than 16% for the reason that Cambridge Analytics scandal broke on 19 March.