Well surprised? I am not. It seems there is just nothing you can trust when money comes into play.
Here's the kick: End-to-end encrypted messaging service, such as WhatsApp and Telegram, contain a backdoor that can be used, if necessary, by the company and of course hackers, or the intelligence agencies to intercept and read your end-to-end encrypted messages, and that’s all without breaking the encryption.
Well I do not write that good. So read it here
https://thehackernews.com/2017/01/whatsapp-encryption-backdoor.html