Messaging service WhatsApp has sought to reassure users following concerns sparked by its controversial privacy policy changes. The Facebook-owned service says there has been a lot of misinformation about its update to terms of service, where users are now requested to agree to allow Facebook and it's subsidiaries to collect user data from their devices. The move has raised eyebrows and unleashed many questions about the invasion of user privacy, causing some people to migrate to rival services like Telegram and Signal.