Which of Elliot Alderson's hacks in Mr. Robot had the most profound impact?

Elliot Alderson's Hacks
Mr. Robot (2015)
Mr. Robot
TV
Elliot Alderson's Hacks poll options
Elliot Alderson's Hacks
Mr. Robot (2015)
Mr. Robot
- The E Corp hack
- The FBI hack
- The Dark Army hack
- The Deus Group hack