"Apple released the "important security update" in response to an active malware threat that can be used to read texts and email, record calls (including WhatsApp and Viber calls), track your location and turn on your phone's camera and microphone.

If that sounds terrifyingly invasive, that's because it is. The threat, dubbed "Trident" by mobile security firm Lookout, exploits three zero-day vulnerabilities in iOS 9 to form an "attack chain" that can break through Apple's (relatively) secure platform. According to University of Toronto's Citizen Lab, Trident is used in a spyware product developed by Israel-based "cyber war" company NSO Group (which is reportedly owned by an American venture capital firm)."