Facebook advertisers have threatened to abandon the platform in the wake of a massive data harvesting scandal which began after it was revealed that an app created by two psychologists – one of whom Facebook employs – gathered data on over 50 million Americans and then sold it to political data firm Cambridge Analytics and several others, who used it without consent. 

Mark Zuckerberg, co-founder and CEO of the social media giant gave several interviews Wednesday after spending three days in hiding, ostensibly with a crisis management team which advised him not give wholly unsatisfactory answers to one of the largest data breaches in history. 

The scandal is pushing some Facebook advertisers to consider dropping the platform, reports 
The Times

ISBA, a British group of advertisers that spend hundreds of millions of pounds a year on Facebook, demanded answers. It is understood that some of its 3,000 brands, which include those of the consumer goods companies Unilever and P&G, will not tolerate association with Facebook if it emerges that users’ data has found its way into the hands of brokers and political campaigners without authorisation. Sources close to the trade body said that if the company’s answers were not satisfactory, advertisers might spend their money elsewhere. ISBA will meet Facebook executives this week.

Others, such as Mozilla – the company behind the Firefox browser – have already pulled out, or as it said have “pressed pause” on Facebook advertising. In a scathing post, Mozilla said that “when Facebook takes stronger action in how it shares customer data, specifically strengthening its default privacy settings for third party apps, we’ll consider returning.” Until then, “Mozilla will advertise elsewhere” as it warned in a scathing post:

Mozilla is pressing pause on our Facebook advertising. Facebook knows a great deal about their two billion users — perhaps more intimate information than any other company does. They know everything we click and like on their site, and know who our closest friends and relationships are. Because of its scale, Facebook has become one of the most convenient platforms to reach an audience for all companies and developers, whether a multibillion corporation or a not-for-profit.

We understand that Facebook took steps to limit developer access to friends’ data beginning in 2014. This was after Facebook started its relationship with Cambridge University Professor Aleksandr Kogan, whose decision to share data he collected from Facebook with Cambridge Analytica is currently in the news. This news caused us to take a closer look at Facebook’s current default privacy settings given that we support the platform with our advertising dollars. While we believe there is still more to learn, we found that its current default settings leave access open to a lot of data – particularly with respect to settings for third party apps.

We are encouraged that Mark Zuckerberg has promised to improve the privacy settings and make them more protective. When Facebook takes stronger action in how it shares customer data, specifically strengthening its default privacy settings for third party apps, we’ll consider returning.

We look forward to Facebook instituting some of the things that Zuckerberg promised today