Hacker down: ISIS' Twitter star

An investigation into the first person deemed dangerous enough to kill… because of his ability to tweet. We explore the life and death of Junaid Hussain, the ISIS hacker who ushered in a new era of terror, mainly due to his social media celebrity. We infiltrate hacker circles in Vegas, explore undercover operations, and have a dangerous run-in outside his hometown, to understand how he went from computer nerd to third most dangerous member of ISIS.