Warning – Downloads in BG when Links are klicked on!

I had it installed in my shop to shorten the links. When I tried them out Casper (Kasperski) had a lot to do because when you follow the shortlink it automatically started downloads on my pc in the background on both shortlink endings from wheelches -com and boudja -com. That is an absolute nogo……… I will not submit my visitors to such bs!
I would give a zero if possible.