Brazil's government imposed a 6.6 million real (US$ 1.5 million) fine on Facebook and its local unit for its role in the Cambridge Analytica scandal. The fine is tied to Facebook's unlawful sharing of data from its users in Brazil, Brazil's justice ministry said in a statement posted on its website Monday.
Google's tightening of its political ad policy could help reduce the spread of misinformation on election campaigns, but at a cost for lesser-known candidates. The move by Google placing restrictions on how advertisers can target specific groups of voters also adds to the pressure on Facebook to modify its hands-off policy on political ads.
Facebook on Wednesday said it has taken down about 5.4 billion fake accounts this year in a sign of the persistent battle on social media against manipulation and misinformation. Amid growing efforts to create fraudulent accounts, Facebook said it has stepped up its defenses and often removes the accounts within minutes of being created.
Twitter announced on Wednesday it would ban political advertising globally on its platform, responding to growing criticism over misinformation from politicians on social media.
Facebook, Google and Twitter must do more to tackle fake news or face regulatory action, the European Commission said on Tuesday.
Australia's consumer regulator filed a lawsuit against Alphabet Inc's Google on Tuesday, alleging it misled consumers about how it was collecting, storing and using personal location data.
Facebook chief executive Mark Zuckerberg defended on Thursday his decision to encrypt the company's messaging services, despite concerns about its impact on child exploitation and other criminal activity.
Facebook on Tuesday said it would not take down politicians' posts that violate its community standards and will not label them as rival Twitter has promised, saying it should not be the arbiter of acceptable speech in the political arena.
Facebook said on Monday it is working to stop advertisers from changing headlines in links to news stories after concerns raised by a British political party's altering of one such link.
A US federal judge on Monday ordered Facebook Inc to face most of a nationwide lawsuit seeking damages for letting third parties such as Cambridge Analytica access users' private data, calling the social media company's views on privacy “so wrong.”