Two Indian security researches have found a way to make WhatsApp crash remotely and the only way for someone to fix it is to delete the entire chat history.
Apparently 500 million people are effect as it effects versions 2.11.431 and 2.11.432.
All you need to do is send a 2000 word message in special character to your friend and the app will crash. Every time the recipient opens the chat, the app will crash again and it will happen until the entire chat history is deleted. This can be done with single recipients or for an entire group as well.
The hack was demonstrated in a video at The Hacker News:
Last month WhatsApp released a new feature which showed users when the recipient had actually read a message in the form of two blue check marks. It later took that even further and included the exact time when the message was read. Many users took to social media complaining about the new feature. We wrote a short article on how to avoid the blue check marks.