The platform, which runs on blockchain technology, is expected to launch for consumers in 2020 and is backed by a group of companies, including Mastercard, Visa and PayPal.
Facebook Messenger users only have 10 minutes after they send a message to unsend.
New report accuses the company of giving tech giants like Spotify and Netflix access to private Facebook Messenger messages.
On Tuesday, Brandon Cuddihe, now 31, copped to two counts of attempting to produce child pornography and could be hit with as many as 45 years in federal prison.
Groups of up to four can share fully encrypted video chats.
Facebook: "We want to do everything we can to help victims of this abuse." But will technology really help?
"Mercury is just so weird and so exotic compared to the Moon and other terrestrial planets," Kathleen Vander Kaaden, a planetary scientist at the engineering company Jacobs Engineering Group working on a contract at the NASA Johnson Space Center in Texas, told Newsweek.
Facebook's only real global competition in terms of aggregate users is Chinese company Tencent Holdings.
Secret Conversations isn't the greatest, but it isn't the worst.
A new draft demands state employees brief bosses on information they have shared online.
Facebook believes its bots are the best chance to up-end Google and Apple's app-based ecosystems.
Around 42 billion daily messages are sent by the messenger app.
The app has increased in value over 400 percent in the past year