Three years ago, I installed a modified version of Whatsapp named GBWhatsapp. I was fed up with the old and boring version of Whatsapp. At that time, the original Whatsapp was plain and simple. On the other hand, GBWhatsapp app gave dozens of features that were not provided by official Whatsapp.
I quickly realized that it was my mistake to install that application. It was a modded application.