Facebook Messenger Now Support End-to-End Encryption Of messages in form of secret conversations. Facebook has rolled out the features to over 900 million users of its messenger so that your conversation will be monitored by third parties. To make of the feature you have to enable it, unlike in the other messaging apps.
You’ll need to manually enable the ‘Secret Conversations’ feature for each and every chat, and both participants need to have the latest version of the app installed for this to work.
Sad news, The encryption isn’t available for group chats, and you can only access Secret Conversations from the device you started them on. They also don’t support GIFs and videos (images and stickers work fine, though).
To turn it on, tap the new conversation button, and then tap ‘Secret’ or toggle the switch in the top right corner before selecting a contact. You’ll see the menu bar turn to black; choose your recipient to begin an encrypted chat.
For ongoing chats, you can tap the recipient’s name or the ‘i’ button at the top of your screen and then tap ‘Secret Conversation’ to enable encryption.
Facebook has try to secure the users of its messenger app from been monitored by third parties but the question is how many Messenger’s users knows about this features, I guess they have to put in more work to makes the encryption features works the way it does in the WhatsApp owned by them.