Virus scanners all want to show as many prevented infections as possible, that makes them competitive.
This is basically good, as it makes them thorough, but it is a mixed blessing.
They do automatically delete cookies of their choosing. The more the merrier, for above reasons.
The free internet depends on cookies. Most of the websites offering free info depend on sales from clicks, and the resulting cookies.
If this progresses to where only things like adsense escape…… you can see the picture that emerges for affiliates of all descriptions.