If your computer starts behaving strangely or is very slow, you may have spyware on your computer. Here are just a few things to look for.
1. Pop-up ads keep showing up everywhere, even when you're not on the Internet.
2. You've changed your home page or browser settings but your computer keeps reverting back to the old settings.
3. Your browser suddenly contains components (such as an extra toolbar) that you don't remember downloading.
4. Your computer is slow...or your computer keeps crashing.
If your computer has any of these symptoms, you'll need to investigate to see if you have any spyware on your computer.