I trust Kaspersky already for many years with no ill Überaschungen.Das program runs mitlerweile on all household computers (2 laptops, 1 PC and 1 Mac) without any problems to the system bereiten.Keines Programe used are largely eingebremst.Der protection is also fully in order nor had any full format perform for viruses, Trojans etcEs are no 5 stars from me because my surface (to represent a desktop?) is not necessarily a masterpiece, as I finde.Das is rather a subjective opinion as it first series ankommt.Versand on the function and packaging are top as gewohnt.Klare Amazon Buy recommendation, at this price anyway!