Once installed on your machine, NetPumper may start monitoring your web browsing habits, such as what pages you usually load and what search terms you usually type in the search page. NetPumper may also deliver excessive pop-up advertisements even when you are not browsing the Internet. NetPumper has also an ability to slow down your computer performance by using your hard drive recources in order to deliver advertisements on your computer screen. NetPumper may install new toolbars into your browser without your knowledge or consent. Note, that if you try to get rid of NetPumper manually it may have an ability to recreate itself every time you restart your machine.