This is only available on the latest versions of the app on Android, iOS and Windows Phone. They’re not accessible to anyone at WhatsApp or to anyone else who may be snooping on the transmission/data. This means that every message, every photo and every video is encrypted in a way that only the sender and recipient can see them. This is a significant step for this messaging giant which now boasts of over a billion users. This happened a while ago and is still being gradually rolled out because some are using older app versions. Within the backdrop of Apple refusing to create a backdoor into their phones when asked to by the FBI and the Panama papers investigation, you may have heard about WhatsApp turning on end-to-end encryption for all their users.
