Helix

Helix is a group of hackers that idolized the work of Ghost Fox Goddess, which was an alias Felicity Smoak used when she was a hacker in college. They supplied Felicity with a huge data bank that included the files she needed to get John Diggle out of military prison and blackmail that she used against a Bratva member to gain information about the phone of General Walker in order to track him down in Russia.