Zuckerberg also mentioned that the company "won't keep messages or stories around for longer than necessary to deliver the service or longer than people need them". Facebook makes occasional nods to granting users greater control over their privacy, but at the end of the day, data about users is what makes Mark Zuckerberg's company tick.
Lawmakers, users and investors have expressed concerns over the last two years that Facebook is not doing enough to safeguard user data after a series of breaches and privacy bugs.
"We're building a foundation for social communication aligned with the direction people increasingly care about: messaging each other privately", Mr Zuckerberg said in an interview on Wednesday. Zuckerberg said the future of life online is private encrypted messages, calling it "the digital equivalent of the living room". End-to-end encryption prevents anyone - including us - from seeing what people share on our services.
End-to-end encryption: this is about encrypting messages going through Facebook's platforms.
"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", said Zuckerberg.
The tone of some critics is that Facebook users for the most part stay on the platform in spite of knowing how their privacy has been abused, and the move towards privacy is nothing but lip service. Facebook will do everything "within the limits of what's possible in an encrypted service" to keep users safe.
That's not to say Facebook will suddenly lock itself down, but Zuck suggests a good dose of privacy paint could be slapped on Facebook's services. "People expect their private communications to be secure and to only be seen by the people they've sent them to - not hackers, criminals, over-reaching governments, or even the people operating the services they're using", Zuckerberg wrote.
Zuckerberg said the new Facebook would be built around core targets: private interactions, encryption, permanence, safety, interoperability - across the Facebook family of apps, including Instagram and WhatsApp - and secure data storage.
The emphasis of the service is not on private messaging.
Messages and stories will be impermanent, so people don't "have to worry about what they share coming back to hurt them later".
The tech founder referred to previously-announced plans to integrate Facebook's three platforms - Messenger, Whatsapp and Instagram - into one messaging service accessible through any of the three apps.
"The past year has clearly shown that Facebook not only doesn't care about user privacy, but it has also actively taken steps to secretly collect and exploit users' personal data", James Slaby, director of cyber protection at software company Acronis International GmBh, told Barron's in an email. In fact, Facebook and Instagram might become even more important.
News circulated that this move would possibly be another play for Facebook to gain massive data collection from its users.
They know where I am.
The company has been plagued by privacy-related scandals since its early days-it settled charges from the Federal Trade Commission that it misled consumers by not keeping its privacy promises.