Most of the time, your computer is at risk of attacks from viruses and spyware when you are browsing the Internet. As soon as your PC gets infected by either of these two, you start to have an immediate effect. You will find that your PC is slowing down and at times it hangs in the middle with your monitor screen turning blue. Virus and spyware have other effects on your computer. Your firewall may have been affected, and suddenly, without your knowledge, it starts to send out strange traffic which consists of information relating to your personal data.

Virus or worms, as they are sometimes called, may take over your PC and start mass mailing to all the addresses you have in your address book. If you are within a large corporate network, the virus can also initiate a Distributed Denial of Service (DDoS) attack to disrupt your network operation. Several web-based free PC scan utilities are available on the Internet which can detect various kinds of Internet security threats in your computer, including viruses, worms, Trojans, and spyware.

Free PC scan is an online free tool which is designed to scan your computer for any malware or virus that may be slowing down your PC. It scans for wide range of Internet threats which include known viruses, and spyware programs. Free PC scan is a web-based tool which also detects any vulnerability in your system, and provides you with links to web addresses from where you can download the security patches which are missing. Generally these tools provide you with a report, detailing out the security threats that have been found in your PC.

There is malicious free PC scan web based software which intentionally pumps in virus and spyware in your system when you request a PC scan. After the scan, you may find an odd looking tool bar appearing with your browser. A report generated from the scan would show you various kinds of virus that have been found in your system, and a pop-up will continuously ask you to purchase an anti-virus software to get rid of the various types of viruses found in your PC.

When your computer is attacked by virus or malware, your PC starts to malfunction with positive indications of a threat. Your computer starts to get slow, hanging in the middle. You could find a tool bar suddenly appearing just below your browser, pop-ups continuously appearing on your screen, and you may find that the Windows programs like, “Msconfig”, and REGEDIT not responding. These are typical indications that you either have virus or malicious software in your computer. Free PC scan web-based scanning utility can help you to detect the presence of such threats in your computer.

The best way to choose free PC scan is to look for user reviews on the Internet and go through the various observations made by actual users. This may help you select a web-based free scanning tool that is right for you. Virus attacks could permanently damage your computer. You may have to re-format your hard disk and lose all your data. Malicious software may change your browser and firewall settings, and you may be losing your personal information from your PC which may be utilized by a hacker. You would get continuous pop-up advertisements because of adware coming into your system, and for all these, free PC scan web-based utility can help you in detecting such threats.