The new feature was first discovered in Twitter's APK by Jane Manchun Wong, although Twitter is yet to officially confirm the feature.
TechCrunch has reached out to Twitter for an official information about this feature. Twitter is also providing the support for encryption keys, which make the feature more useful for the privacy savvy users. It's taken a while, but it seems that Snowden's request will soon be granted.
Twitter may gain the upper hand on WhatsApp if Facebook starts to go through the conversations.
Manchun Wong's screenshots show that Secret Conversations would allow users to exchange encrypted messages, view their own encryption key and that of their chat partner, and learn more about encryption.
End-to-end encrypted messages are secured with a lock and only the sender and recipient have the special key needed to unlock and read them.
The company appears to be trialing end-to-end encryption for private messages.
As regulators criticise both social media companies and the widespread availability of encryption for the challenges they allegedly present to public safety, Twitter's decision to roll-out secret messaging may invite more criticism. Even Facebook lets its users pen an encrypted message on Messenger. The company was urged to add the security measure by whistleblower Edward Snowden who directed a tweet to Twitter CEO Jack Dorsey asking for "burn-after-reading" DMs. Currently, you send regular text messages privately to one another, but this new mode is on another level.