What is "greynet"

Within the context of corporate and organizational networks, a greynet (or Grayware) is an elusive networked computer application that is downloaded and installed on end user systems without express permission from network administrators and often without awareness or cognition that it is deeply embedded in the organization’s network fabric. These applications may be of some marginal use to the user, but inevitably consume system and network resources. In addition, greynet applications often open the door for end use systems to become compromised by additional applications, security risks and malware.