| name | type | date isolation | country of isolation | continent of isolation | country of origin | continent of origin | Operating system affected | Developer |
|---|---|---|---|---|---|---|---|---|
| Form | 06/1990 | Switzerland | Europe | Switzerland | Europe | DOS | ||
| AntiCMOS-B | 01/1994 | Slovenia | Europe | China | Asia | DOS | ||
| AntiCMOS-C | 01/1994 | Slovenia | Europe | China | Asia | DOS | ||
| Ontario | 07/1990 | Canada | America | Canada | America | DOS | ||
| Ontario.1024 | 07/1990 | Canada | America | Canada | America | DOS |