The ability to browse through the World Wide Web and obtain an almost limitless supply of information from the Internet, along with an ability to download and utilize 'free' software from these sources has made the PC an invaluable information and entertainment resource. However, these very activities, including the utilization of peer-to-peer computer network software, can result in your computer becoming infected with malware software, without your knowledge!

When a PC becomes infected with malware, every keystroke you make, web site you visit and online conversation could be recorded or monitored by individuals or companies that may surreptitiously have installed software on your PC.

Examples of malware and their potential functions include:

• Spyware - violates your privacy and consumes Internet resources.

• Adware - similar to spyware but can also display persistent advertising through your browser, for example, producing annoying pop-up windows.

• Browser hijackers - take control of your browser's functionality.

• Tracking cookies and keyloggers - record and divulge personal details for example, passwords that you have typed through your browser to third-parties.

• Backdoor Trojans - leave a "back door" in your computer system whereby an individual over the Internet can monitor and control your system, erase any files, remove registry information or even read your email.

Some of the symptoms of malware infections can include:

• Unusual computer problems.

• Slow Internet access.

• Changed browser home pages, search pages or favorites.

• Excessive numbers of adware-generated pop-ups.

Leaving malware unchecked has potentially serious consequences such as the acquisition of private information, including banking details and identity theft.

Spyware Doctor will scan your PC's memory, registry, files on your hard drive (including other drives), and will immunize your system against several hundred known malignant ActiveX objects. Spyware Doctor can also constantly remain on guard, monitoring PC activity.