The incident is being investigated by the British data protection authority.
Sensitive Facebook information for up to 120 million users was exposed online for years, researcher says.
A Cambridge Analytica whistleblower says Bannon was looking for the build-up of an "arsenal of weapons to fight that war."
The figures emerged as part of an audit of third-party applications first announced in March by CEO Mark Zuckerberg.
But the firm's London offices are not what they seem.
The Facebook CEO could be forced to appear before the U.K.'s Parliament next time he enters the country.
Facebook CTO Mike Schroepfer testified in front of the U.K government's fake news committee.
Kogan appeared before the U.K. Digital, Culture, Media and Sport Committee’s inquiry into fake news.
The U.K. government is studying the effects of fake news as ex-Cambridge Analytica staffer Brittany Kaiser teased fresh revelations.
Facebook scoops up users' data as they navigate across the internet, but its far from the only one.
Two long-anticipated appearances from the Facebook boss will happen this week, but can they help save the company from scandal?
Facebook's entire user base braces to find out who was affected in the data misuse scandal.
The project was put on hold after the Cambridge Analytica data-sharing scandal broke.
The Facebook founder said the #DeleteFacebook movement had no meaningful impact on his business.
“Malicious actors” could abuse the feature to scrape public profile information, Facebook admitted.
If confirmed, Kogan’s account would mean the digital modeling Cambridge Analytica used was hardly the virtual crystal ball a few have claimed.
Christopher Wylie told lawmakers Dan Mursean had died amid rumors he had been poisoned.
"This was a breach of trust, and I'm sorry we didn't do more at the time," the statement signed by Zuckerberg read.
It's also one strand in a web of Trump-NRA relationships.
Police cordoned off the scene as they investigated but later stood down the incident, which was a false alarm.
CEO says he is confident Facebook can curb any state-sponsored disruption of November's political races.