Unsecured Internet of Things (Iot) devices and sensors. Nefarious nation-state actors. A war for cyber talent. Chief Information Security Officers (CISOs) face an ever-growing list of thorny challenges to contend with. Although the CISOs checklist continues to swell, it's critical to prioritize. As we look ahead to 2017, here are the Top 3 challenges that CISOs need to address.