How can ones Whats App privacy be intruded with?

Question

The new version of Whats App 2017 is complicated and requires appropriate tutorials for use. So how can one see who is chatting with who?

Answer 1

If you believe locking your WhatsApp with a password, makes it secure then you are wrong. Even after locking WhatsApp with Applock, one can read all your chats easily. All they need is access to your device for a minute.