I think there is one part in the episode where FSociety team (Darlene, Mobley etc.) made a crucial mistake. When they are taping the first time when Darlene is in the mask and the tape becomes defected, she goes to put it on the table and it falls behind the table. I clearly think they forgot to clean it up. When the FBI go to look for E Corp Lawyer, I believe they will find this tape.