Here are answers to some common questions about spyware.
What is spyware?
Spyware is software that can install itself or run on your computer without providing you with adequate notice, consent, or control. Spyware might not display symptoms after it infects your computer, but many malicious or unwanted programs can affect how your computer runs. Spyware can, for example, monitor your online behavior or collect information about you (including personally identifiable or other sensitive information), change settings on your computer, or cause your computer to run slowly.
How can I tell if I have spyware or unwanted software on my computer?
You probably have some form of spyware on your computer if:
There might be spyware on your computer even if you don't see any symptoms. This type of software can collect information about you and your computer without your knowledge or consent. Running
Where does spyware and potentially unwanted software come from?
Unwanted software can be installed by websites, downloaded programs, or a program you might install from a CD, DVD, external hard disk, or a device. Spyware is most commonly installed through free software, such as file sharing, screen savers, or search toolbars.
Can I get spyware without knowing it?
Yes, some spyware can be installed from a website through an embedded script, or program in a webpage. Some unwanted software requires your help to install through web pop-ups or free software that require you to accept a downloadable file. However, if you keep
What do I do when a pop-up won't close until I agree to install a program or change my home page?
Some websites will repeatedly display pop-ups asking you to install a toolbar or change your home page. When this happens, try closing the browser window. If the pop-ups still appear, right-click the Internet Explorer button in the taskbar at the bottom of your screen, and then click Close Group. As a last resort, close any other programs you have open, and then restart your computer.
How can I prevent spyware?
Run up-to-date antispyware software. Programs such as
Keep your computer up to date.
Review license agreements before installing software. When you visit websites, do not automatically agree to download anything the site offers. If you download free software, such as file sharing programs or screen savers, read the license agreement carefully. Look for clauses where you must accept advertising and pop-ups from the company, or that the software will send certain information back to the software publisher. For more information, go to the Microsoft
How do I remove unwanted software?
The best way to remove spyware is to run up-to-date antispyware software that can monitor software that is trying to install itself on your computer, and also scan for and remove potentially unwanted software that might already by installed. For more information about removing spyware and other unwanted software, see Using