quality:correction
Grayware

Grayware is any unwanted application or file that can worsen the performance of computers and may cause security risks but which there is insufficient consensus or data to classify them as malware. Types of greyware typically includes spyware, adware, fraudulent dialers, joke programs ("jokeware") and remote access tools. For example, at one point, Sony BMG compact discs silently installed a rootkit on purchasers' computers with the intention of preventing illicit copying.