Content type: Report
24th June 2019
Like many others, PI were alarmed at recent reports that Facebook have been making mobile phone numbers (which users believed to be) provided for the express purpose of "two-factor authentication" (2FA) both searchable, and a target for advertising by default. One of the myriad ways Facebook displays targeted adverts to users is through so-called "Custom Audiences". These "custom audiences" are lists of contact details, including phone numbers and email addresses, uploaded by advertisers.…
Content type: Long Read
27th March 2019
(In order to click the hyperlinks in the explainer below, please download the pdf version at the bottom of the page).