Donie O'Sullivan

Mail.Ru Group, a Russian internet company with links to the Kremlin, was among the firms to which Facebook gave an extension which allowed them to collect data on unknowing users of the social network after a policy change supposedly stopped such collection. Facebook said apps developed by Mail.Ru Group were being looked at as part of the company's wider investigation into the misuse of Facebook user data in light of the Cambridge Analytica scandal. Mail.Ru Group developed hundreds of Facebook apps, some of which were test apps that were not made public.

Facebook trumpeted the deletion of hundreds of pages and accounts run by the Internet Research Agency, the Kremlin-linked troll army that has sought to meddle in U.S. politics. But of the five examples of deleted accounts Facebook provided the public, two had links to the troll army that should have been obvious to the social networking company months ago.