On one of the receipts associated with the stolen credit cards used by the hacker elorentz, the assumed identity was Grace Hopper. Ms. Hopper was Rear Admiral with the United States Navy who facilitated the development of the programming language COBOL.
A tribute was given to James Colby , who played the Special Agent with the Department of Homeland Security, apparently he passed away a month before the broadcast of the episode.
Kilroy stated that Edward Lorentz was the father of Modern Chaos Theory.
If Michael Potts seems familiar, he is most memorable as Brother Mouzone from The Wire (2002). Of late, he seems to assume to role of quite a number of malicious characters: Person of Interest (2011), The Blacklist (2013), and Gotham (2014).