Israeli espionage firm hacks WhatsApp. Can install spyware with missed call.
My advice: dump WhatsApp today and start using Wire (https://wire.com/en/products/personal-secure-messenger/). Tell your friends and family to do the same. (It’s a simple, free download on all app stores. Easy to use, doesn’t require your phone number, and their business model is based on charging for commercial use and for pro accounts.)
You can find more alternatives on @switchingsocial (https://switching.social/ethical-alternatives-to-whatsapp-and-skype/)