The invention provides a unique security box secured to a fixed object for securing phone and tablet charging cords as well as electrical cords, thereby preventing theft of said cords. The security box includes a first groove formed in the interior surface parallel to one edge running the length of the lid and a second groove formed in the interior surface near the opposite edge, the two grooves aligned with identical grooves in a bottom portion of the box when the lid is closed. One annular hollow feature is centered within a groove in the bottom portion, a second and third annular hollow features securely positioned in the second groove spaced apart from each other at the distance equal to the length of the first annular hollow feature; the annular features forming an enclosed tube accepting a locking threaded through holding the box securely closed with the locking cable.