Google Security Engineer Felix Krause discovered a privacy loophole in iPhone which can be abused by the malicious iOS app to take videos and Pictures of user secretly. Once you grant permission app access to your camera it can take photos and video without your knowledge, uses front and back camera, also it can run facial recognition. Krause made a social network app that takes pictures and uploads on the feed without users permission. He also suggested some preventive measures for users, the first and the best way is to cover your camera.”]
Source: https://gbhackers.com/iphone-camera-camera-videos-pictures/