Spyware is software that will send information about your browsing habit to the hackers.
They will use it for themselves or they will sell it to the advertisers.
It can also cause a lot of problems to your PC, but there are ways to remove it.
If you're infected by spyware, it can change your homepage and the Internet connection will become very slow.
Other than that, it will also make your startup time longer and your system will become very slow when loading a program.
If you have these problems, then it is possible that your computer is infected by spyware and in order to get rid of it, you need software that can remove it from your system.
The software that you need are Spybot Search and Destroy and Ad-Aware 2007.
Both are very good products because both can detect most threats and remove it from your system.
After installing the software, make sure you update both of it so you can get the latest threats definition.
After that, scan your system and remove every threat that they found.
In order to protect yourself from visiting malicious websites, download and install McAfee Site Advisor.
It will warn you if you're visiting suspicious websites when you're online.
After that, you need to install Spyware Terminator because it has a real-time protection.
Real-time protection is essential because it can detect threats coming to your system right away.
Other than these software, having a good antivirus can also help you to protect your computer.
In conclusion, you need Spybot Search and Destroy, Ad-Aware 2007, Spyware Terminator and McAfee Site Advisor to protect you from this type of threat.