We all know and love WhatsApp - the accessible messaging service on Android and iOS that consolidates all your communication in one handy place. But what if it also left your old messages open to viewing by other users?
According to a report by an online security consultant, the messages are backed up on a local SD card on the phone and are available for reading by any other compatible app. And seeing as most Android apps ask for your permission to access your storage when they're being installed, that means other companies could potentially be viewing your messages.
There's no reason to assume anything sinister is going on really - Android is a relatively open system and companies may not be interested in accessing your information. And with the recent aquisition of WhatsApp by Facebook, any security issues will likely be resolved soon.
The information comes from a blog post by security expert Bas Bosschert and also includes details on how to code an app which would be capable of grabbing your WhatsApp data even while you were playing an otherwise innocent game.