How to read someone's chats by accessing to their WhatsApp Account?

Nowdays many people are trying to access their friends WhatsApp account and to read all chats they had done. They are now progressing with new developed tricks.
Today, I will say how they are accessing to others WhatsApp Account. 

After each chat, a file with format.mcrpyt17 get updated in your phone which is hidden in your phone file manager so to make it visible, we have to use some other file manager from play store ( we cannot say the name of file manager as it is against the rule). After searching this file on illegal file managers, copy the file to other device on which you want to read all chats. You can use xender to copy the file to other device. After copying, keep the file in a specific destination folder where the file was in victims phone. Then just uninstall your whatsapp and re-install again with the victims phone number(used as whatsapp number) then just choose 'Restore and Backup' to restore or to get access to all chats of the victim. To get a confirmation code, you can use any fake messaging app and can generate a fake confirmation code. Now you can read all conversations of the victim. 

*this was just for personal knowledge. please don't use this trick as it is illegal and if you use this trick, our authority is not responsible.

**complete information is not given as it is illegal and against the rule.