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.”

Facebook is also going to prevent Custom Audience data from being shared across Business accounts, according to an anonymous email with the contacts redacted. Facebook confirmed to The Verge that the tool was being built and that it would require advertisers and digital agencies to certify they have permission to use user data.

https://www.theverge.com/2018/4/2/17188422/facebook-force-advertisers-prove-user-consent