Is Messenger private conversation?

Related questions

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Tags

1. #regular
2. #messages
3. #friday
4. #sender
5. #messenger
6. #encrypted
7. #secret
8. #company
9. #feature
10. #facebook
11. #conversations
12. #announced
13. #inside
14. #built
15. #devices
16. #these
17. #servers
18. #called
19. #private
20. #stored
21. #recipient