8. fsociety
"What is fsociety?" That was the question that dominated the show's pilot episode. When he manages to halt an attack on the servers of his employer Allsafe, Elliot discovers and secures a hidden .dat file named fsociety. Yet the file is accompanied by a message demanding that he shouldn't delete it. Elliot, intrigued, leaves it there. In this single decision, everything begins to come together. Elliot is introduced to the shadowy Mr. Robot and his group, fsociety, which turns out to be a hacktivist group determined to take down the all-powerful corporation E Corp. It may seem like a small detail, but that moment when "fsociety" showed up Allsafe's servers was the show's first real revelatory moment: a word from which many mysteries and stories developed.