Let’s rewind to July 2017. The seventh season of Game of Thrones was in full swing and Daenerys Targaryen had finally arrived in Westeros to claim the Iron Throne. But at the zenith of the dragon-scorched zeitgeist, disaster struck — HBO got hacked and the script of an upcoming episode was leaked online. This high-profile hack wasn’t the handiwork of experts armed with state-of-the-art software and an unlimited budget. The culprits turned out to be a band of five hackers in India equipped with hand-me-down computers and makeshift IP hoppers. So how did HBO — a multi-billion-dollar media network —…