Ghostware

Definition
Ghostware, also called a rootkit, is a malicious, or unwanted, software program that resides on a computer and disguises itself from other programs designed to detect malware.

Overview
In 2005, BMG released CDs with digital rights management software installed that also downloaded a rootkit onto the user’s computer designed to limit the user’s ability to access the CD. The CDs were eventually recalled and BMG ended up defending a class action lawsuit.