https://www.theverge.com/2018/4/2/17188422/facebook-force-advertisers-prove-user-consent >Facebook has been rolling out a series of changes to its platform that are all aimed at closing up loopholes following the Cambridge Analytica data breach. Now, the social media giant will be launching a certification tool that will check and ensure that marketers are only sending ads to email addresses that were rightfully obtained with user consent. >The tool is called the Custom Audiences certification tool. A Facebook rep wrote about the tool to a marketing client in a message spotted by TechCrunch. They wrote, “Advertisers will be required to represent and warrant that proper user consent has been obtained for the use of any data uploaded.”