In a series of tweets on Saturday, the firm said that it did not use Facebook data for the Trump campaign, denied that Wylie was a cofounder, and claimed that "advertising is not coercive".
It said the parent company's SCL Elections unit hired Kogan to undertake "a large scale research project in the USA", but subsequently deleted all data it received from Kogan's company after learning that Kogan had obtained data in violation of Facebook policies.
Facebook may say its business model is to connect the world, but it's really "to collect psychosocial data on users and sell that to advertisers." said Mike Caulfield, a faculty trainer at Washington State University who directs a multi-university effort focused on digital literacy.
The firm, which was suspended by Facebook over the weekend after Facebook alleged it lied about deleting illicit data, leaned on a third-party firm to create quizzes and surveys inside the social network designed to engage users, then used artificial intelligence systems to build "psychographic profiles" about voters, said co-founder and head of product Matt Oczkowski in a 2017 interview with CBS Interactive's TechRepublic. According to Facebook, Kogan violated its policies by passing data on to Cambridge Analytica and another firm, Eunoia Technologies.
A senior British politician accused both companies of misleading MPs and said that he would ask Facebook CEO Mark Zuckerberg to appear in person to answer questions about the secret harvesting of users' data.
However, he continued, "Several days ago, we received reports that, contrary to the certifications we were given, not all data was deleted.If true, this is another unacceptable violation of trust and the commitments they made".
The Guardian reporter Carole Cadwalladr, who broke the bombshell story on Saturday, told CBSN that Facebook threatened to sue her publication in a bid to prevent their exposé on its users' data being harvested from being published.
'Cambridge Analytica only receives and uses data that has been obtained legally and fairly.
Facebook, Cambridge Analytica and Kogan did not respond to requests seeking comment Sunday. However, in a new statement Sunday, the company said it was conducting a "comprehensive internal and external review" to determine if the user data in question still existed. The company claims to build psychological profiles based on personal details from millions of Americans that can categorize individual voters.
It's not clear what Chancellor knew about GSR's data collection practices, if he knew anything.
"Cambridge Analytica fully complies with Facebook's terms of service and is now in touch with Facebook following its recent statement that it had suspended the company from its platform, in order to resolve this matter as quickly as possible" said the data analytics company.
The firm said none of Dr Kogan's data was used in its 2016 election work for the "avoidance of doubt".
"Facebook has been on trial in the past 12 months in the court of public opinion", said Stephen Hahn-Griffiths, chief research officer at the Reputation Institute, which assesses public attitudes.
"People who consented thought it was for science", said Casey Fiesler, from the University of Colorado Boulder. "In general, most of these privacy settings are superficial", he said. Our robust data protection policies comply with U.S., international, European Union and national regulations'.
The revelations come at a time of intense US scrutiny of Russian meddling in the 2016 USA presidential election, with 13 Russians criminally charged last month with interfering to help Donald Trump.
The hearings emboldened many lawmakers, including Klobuchar and Sen.
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