The UK Committee for Digital, Culture, Media and Sport has slammed Facebook, labelling the social network "disappointing" for not being completely transparent following the Cambridge Analytica scandal.
After Facebook "did not provide a sufficient level of detail and transparency", the Chair of the Committee, Damian Collins MP, said in an open letter published on Wednesday that the social media giant must not be taking the whole thing as seriously as it says it is.
He continued: "It is disappointing that a company with the resources of Facebook chooses not to provide a sufficient level of detail and transparency on various points including on Cambridge Analytica […] and that shows general discrepancies between Mike Schroepfer [the company's chief technology officer] and CEO Mark Zuckerberg's respective testimonies."
The Committee said it expected "both detail and data", but in a number of cases "got excuses" instead.
The Committee also seem rather annoyed that Zuckerberg, refuses to come to the UK to talk face-to-face and present proper evidence for the inquiry.
"[If Facebook] truly recognises the ‘seriousness' of these issues as they say they do, we would expect that he [Zuckerberg] would want to appear in front of the Committee and answer questions that are of concern not only to Parliament, but Facebook's tens of millions of users in this country," Collins added.
"For too long these companies have gone unchallenged in their business practices, and only under public pressure from this Committee and others have they begun to fully cooperate with our requests. We plan to write to Facebook in the coming days with further follow up questions."
Alongside its critique of Facebook, the committee is publishing Facebook's response to its letter which was sent earlier this year following the Cambridge Analytica scandal and put 39 outstanding questions to the company.
The letter was sent after "insubstantial" evidence was given by Schroepfer on 26 April.
The questions also cover the committee's enquiries on dark ads, Facebook Connect, the amount spent by Russia on UK adverts on the platform, data collection across the web, and budgets for investigations.
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