High Quality Content by WIKIPEDIA articles! Ontario.512 is a computer virus, discovered in July 1990. It is named after its point of isolation, the Canadian province of Ontario. Because Ontario.1024 was also discovered in Ontario, it is likely that both viruses originate from within the province. By the Ontario.2048 variant, the author had adopted "Ontario" as the family`s name and even included the name "Ontario-3" in the virus code.