16 Facebook employees leading Mark Zuckerberg's mission to rebuild the social network and reverse its troubles in the massive 'pivot to privacy'

The future, according to Mark Zuckerberg, is private.

Reeling from two years of bruising scandals, Facebook has begun a major initiative to overhaul the social network so that it's more attuned to the privacy and security implications of a service used by more than 2 billion people.

As part of this so-called pivot to privacy, Zuckerberg described the future Facebook as being divided between a public "town square" - essentially the familiar public posts on the Facebook Newsfeed today - and a private "living room."

"As I think about the future of the internet, I believe a privacy-focused communications platform will become even more important than today's open platforms," Zuckerberg wrote in a blog post in March 2019. "Privacy gives people the freedom to be themselves and connect more naturally, which is why we build social networks."

Facebook's private living room will encompass existing products like WhatsApp, as well as new, yet-to-be created services and features. Facebook is already hard at work knitting together its various messaging apps - WhatsApp, Instagram DMs, and Messenger - making them end-to-end encrypted, and giving users more control over their data. And new products being developed, including the controversial Libra digital currency, will be built on the foundation of this new privacy framework.

It's a major undertaking - but who's behind it? Who are the crucial figures driving it to succeed? Business Insider has identified 16 of the key figures working on the company's "pivot to privacy," from veteran lawyers to key lieutenants of the 34-year-old billionaire CEO, expert technologists, and Facebook critics-turned-insiders.

In no particular order, here they all are...