A sentient replicator and intrusion entity, usually superturing, SI:1 or greater. Although an ai virus is often virtual, it does not have to be so; e.g. it could use or appropriate a ril body, or vehicle, or swarm.
Translator Virus - Text by Charles Mosteller and John B A Translator Virus is a high-level sentient to sophont piece of software that subverts translation devices and is made to to sow confusion and spark wars by altering the translations between clades. In some cases however translator AIs or lesser software have worked perfectly well; it is just that none of the parties like the other parties' views and that later the translators or a translator virus are blamed.