Complex sentence: On July 31,2017, due to a security breach, HBO was victim of 1.5 terabytes of stolen data however, "this was not related to this episode leak" according to "The Verge".
Split into simpler sentences: On July 31,2017, due to a security breach, HBO was the victim of 1.5 terabytes of stolen data. However, "this was not related to this episode leak", according to "The Verge".