Social notworking outfit Facebook has denied claims that it has been tracking its users with an indestructible cookie after they have left the site.
Australian insecurity expert Nik Cubrilovic slammed Facebook for using cookies to track users when they are logged off from the service.
According to AP, Facebook engineer Gregg Stefancik admitted that Facebook changes, but does not delete, cookies when users log out. However he said that was a safety measure, and does not use the cookies to track users or sell their personal information.
In a written statement, Facebook added that it did not track users across the web. Cookies are used to personalise content. Facebook argues that cookies maintain and improve what Facebook does, like measuring click-through rates and for keeping underage kids from trying to sign up with a different age.
None of the information Facebook receives when you see a social plug-in is used to target ads and it deletes or anonymise this information within 90 days. It is never sold, Facebook declared.
Logged-out cookies are also used to identify spammers and phishers, and detect when an unauthorised person is trying to access a user’s account.
However there are signs that Facebook is getting out of hand.
Last week it showed off new third-party applications that automatically share every action users take: every song they listen to, article they read and video they watch.