Yazna and ++ are two viruses in love.
They are looking for each other on the net, running through connected computers.
They are different from other virii in that they will cause you neither damages to your computer, nor do they put your operative system at risk.
Their passage is soft, invisible, and extremely fragile.
They live a few moments in your more volatile computer folders, leaving a small sign of their presence, and. if they don't find each other, they spread to another computer, hoping for the long awaited encounter, sooner or later, sSomewhere on the net.
Probably Yazna or ++ have already passed by your computer, and you haven't noticed. If not, it could happen tomorrow. Or maybe never.