Your WhatsApp conversations have just been made much more secure thanks to the new Advanced Chat Privacy
There are lots of privacy and security features built into WhatsApp, but there have been a few oversights. Looking to remedy this, a new “privacy layer” called Advanced Chat Privacy provides powerful options.
The feature has been designed with those conversations that need to be kept private in mind. It gives the option of blocking anyone you are chatting to -- one-on-one or in a group -- from exporting chats. It’s a nice security boost, but it’s not infallible.