Why is adware bad?
Adware is not necessarily malicious – unlike a virus, it isn’t developed to harm your computer or your programs – nor is it illegal; however, it does gather information about you with or without your knowledge, and it does install itself on your computer, with or without your permission. This can slow down your computer because you have programs you don’t know anything about running in the background, using up your usage capacity which can cause your computer to crash. Usage capacity is how many programs your computer can run at once without overloading.