Facebook bought WhatsApp in a deal worth $19 billion, 19 times what it paid for two years ago. The WhatsApp service handles more than 50 billion messages daily, and has 385 million active users. Facebook and WhatsApp assured that nothing is going to change after the acquisition and WhatsApp will continue to function as an independent service. But we really can’t trust the U.S. Government and the Security agencies like the NSA, that don’t respect our privacy and freedom of speech. There are many other free secure chat applications available likeetc., that you should use to keep your data private and Secure, until WhatsApp will not adopt end-to-end encryption.
Source: https://thehackernews.com/2014/02/why-you-need-to-stop-using-whatsapp.html