How secure is Hangout app?

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Tags

1. #between
2. #riddled
3. #available
4. #means
5. #server
6. #google
7. #android
8. #servers
9. #complete
10. #avoid
11. #concerns
12. #privacy
13. #being
14. #access
15. #device
16. #encrypted
17. #hangouts
18. #security
19. #despite