Data scientist Frances Haugen, a former employee in Facebook's civic integrity unit, revealed that she was the source of internal documents and research showing the company knew of the harmful effects caused by its platforms. The revelations in the internal research documents featured in a series of articles last month in The Wall Street Journal. The company's own findings include knowledge of the harms Instagram caused teen girls' body image perceptions and a two-tier system of penalties for misuse of its platforms, one for celebrities and the other for the public. Frances Haugen is a data scientist from Iowa who spent two years at Facebook, from June 2019 until May of this year. Prior to that, she worked on algorithms at Google, Pinterest and Yelp. She told "60 Minutes" she was recruited to Facebook and specifically wanted to work on issues around misinformation. Haugen said the career move was inspired by the loss of a friend to online conspiracies, something she did not want anyone else to go through. Haugen will testify before the US Congress Tuesday on the harm to young users caused by Facebook's platforms and will appear before a parliamentary committee in the UK later this month. She has also gone to the Securities and Exchange Commission (SEC) in the US, alleging Facebook misled investors about the effectiveness of its strategies and algorithms to mitigate the negative effects of its platforms. Some of the documents she obtained have also been shared with attorneys general in California, Vermont, Tennessee, Massachusetts, and Nebraska. Sunday's "60 Minutes" interview kicks off a publicity tour that will include the Web Summit, a tech conference in Lisbon and meetings with European lawmakers in Brussels this fall. Facebook did not directly address Haugen's assertions. However, it did dispatch Nick Clegg to CNN's "Reliable Sources" program. Clegg is a former UK deputy prime minister and leader of the Liberal Democrats who now serves as a vice president for policy and global affairs at Facebook. On CNN, Clegg called allegations that ran in The Wall Street Journal last month "misleading" and asserted the company seeks to "mitigate the bad, reduce it and amplify the good," the opposite of what Haugen clams defined her experience at the company. Subscribe: www.youtube.com/user/deutschewelleenglish?sub_confirmation=1 For more news go to: www.dw.com/en/ Follow DW on social media: ►Facebook: www.facebook.com/deutschewellenews/ ►Twitter: twitter.com/dwnews ►Instagram: www.instagram.com/dwnews Für Videos in deutscher Sprache besuchen Sie: www.youtube.com/dwdeutsch #Facebook #FrancesHaugen #SenateHearing