More than 1 million Web sites were infected with malware during the second quarter of this year, many of them innocent sites whose administrators are unaware of the hidden malware, according to antimalware service provider Dasient. Legitimate Web pages can be hiding malware that gets stealthily dropped on your computer in so-called drive-by downloads. Searching for free stuff and using porn and pirate Web sites can also increase your chances of encountering malware. 'They are entirely silent and entirely invisible.'Įven if you practice safe computing and don't click on random links that lead to malicious Web sites or open unsolicited attachments hiding a virus or Trojan, you could get infected. 'The bad guys are building the smallest, lightest, most undetectable items they can so you don't get symptoms at all,' he said. Typically, fake antivirus is the only malware that shows itself and that's because it's designed to trick you into thinking you have an infection so you will pay money to have it cleaned up, said David Perry, global director of education at Trend Micro. System Mechanic is another helpful maintenance tool.)

Windows 7 tends to not need defragmenting help the way that XP does. IOBit Smart Defrag and Auslogics Disk Defrag are good defraggers. CCleaner, is an excellent free utility for tune-ups, browser track remover and dead registry keys. (To deal with noninfection slow-down and other issues, there are some tools. Your disk could need defragmenting, you could need to add memory to your machine, or there could be some other issue. It could mean that there is some other problem with your system. If spyware or adware is on your machine, in addition to it running slower, there may be new toolbars and links in your browser your home page, mouse pointer, or search engine may be changed you may be redirected to a different Web page from the one you typed in and there may be pop-up ads even if you are not connected to the Internet.īut slow downs and other problems don't necessarily mean your computer has an infection.

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