Securing Social Media User Data -- 3

Socialmediausersgeneratetremendousamountsofdata.Tobetter serveusers,itisrequiredtosharetheuser-relateddataamongresearchers,advertisersandapplicationdevelopers.Publishingsuch datawouldraisemoreconcernsonuserprivacy.Toencouragedata sharingandmitigateuserprivacyconcerns,anumberofanonymizationandde-anonymizationalgorithmshavebeendevelopedtohelp protectprivacyofsocialmediausers.Inthiswork,weproposea newadversarialattackspecializedforsocialmediadata.Wefurther provide a principled way to assess effectiveness of anonymizing different aspects of social media data. Our work sheds light on newprivacyrisksinsocialmediadataduetoinnateheterogeneityofuser-generateddatawhichrequirestrikingbalancebetween sharinguserdataandprotectinguserprivacy.