The four Trojan horses recognized by Rival probably come from the United States. They reside in four applications or startup documents from the public domain: FontFinder, Mosaic, Steroid and VirusInfo. The latter is in fact a BASIC program.
FontFinder, Mosaic and Steroid are very harmful since they try to destroy your disk directory contents. While Rival can eradicate them, only FontFinder may be restored to its previous state.
VirusInfo simply deletes the Finder but it is harmless under MultiFinder.
