But like the author said, it can be a platform to execute crimes as no proper track of it is kept. That is not good for a nation and its people. I feel rather than putting a ban, it is better to bring some tracking mechanism. I do not know how far it is practical.
If nothing works, and if the only option left is to ban Whatsapp, then I too will face it. Earlier Orkut was the favourite of many, but later it was banned in many countries. Then people moved on to FB. Likewise if not Whatsapp, there will be something better and new coming up.
"Do not give up, things might not favour you always"
'Idhuvum Kadandhu Pogum "
Even this challenging situation would ease
Everything you do online, is saved somewhere.
Terrorists use more than whatsapp to communicate.
They have even set up their own search engines which are totally non-trackable.
The stronger a light shines the darker are the shadows around it.
This is my personal opinion.
Non-violence is the greatest Dharma; So too is all righteous violence.
Using whatapp safely is the responsibility of each one of us.
There are a few countries where the tricks of some players is not allowed. Naturally they have to submit t the conditions and stipulations of those governments or not enter those territories. Their blackmailing and resistance won;t work with such rulers and governments.
Our government also should have the will power to make all those providers obey and comply to our nation's laws and not to allow anything affecting this nation's security.
I don't think watsapp could play any such role here. In fact, I have also heard that this feature of watsapp is very insecure. But then, hackers are present everywhere, you just cannot ban the things because of this. Watsapp provides an excellent mode of regular commmunication. I do not think it should be banned.
Do what inspires you !!