Hacker

Hacker was a Human man, a security officer who served in Starfleet aboard the Federation starship USS Enterprise (NCC-1701) under the command of Captain James T. Kirk in the late 2260s.

History
In 2269, Ensign Hacker was in the transporter room when Montgomery Scott reintegrated Cyrano Jones, whose transport was disrupted after his scout ship was destroyed by the. When Jones materialized along with dozens of tribbles, Kirk asked Hacker to immediately seal off the area. 

Kirk assigned Hacker to keep an eye on Jones and have security prepare quarters for him. Kirk told him in no uncertain terms not to listen to a word Jones said, "and above all... don't let him sell you anything." 

Background

 * Hacker was written into the story as a cameo for writer David Gerrold.