https://www.cnet.com/news/whatsapp-co-founder-who-sold-to-facebook-says-deletefacebook-zuckerberg-cambridge-analytica/

Of all the people who have turned on Facebook CEO Mark Zuckerberg, this may be the biggest yet.

Brian Acton, the co-founder of the internationally popular WhatsApp messaging service, sent out a tweet from his unverified Twitter account late Tuesday telling people "It is time. #deletefacebook."