This program was written by Michael Hamel of University Otago, New Zealand. It detects and removes the nVIR virus and its variations, as well as the WDEF and MDEF viruses. However it cannot clean the currently active System File. It also detects but cannot remove the Scores and INIT–29 viruses.
It can also prevent further nVIR infection by installing a nVIR 10 resource. This is not recommended as it can confuse other virus control programs.