April 10, 2015 Tracking report was wrong, says Facebook …but there is a bug that needs fixing Facebook has responded to privacy claims made by Belgian researchers but admitted that a "bug" may have caused inadvertent tracking of some users. Naked Security
April 01, 2015 Facebook hits back at report claiming it tracks pretty much everyone A new report claims Facebook is tracking logged out users, non-account holders and EU users who have explicitly opted out of being tracked. Naked Security