With intruders everywhere one has to be really aware of the ways and means of not allowing anyone trespassing! Well you must be aware of the specialized anti-virus softwares that prevent and repair the commonly found viruses.

Still your machine gets infected so I will give you some tips regarding of methods that could reduce rate of infection of your machine. You actually just have to apply common sense! Tips to safeguard your machines from viruses

Rule no 1 stresses on the fact that you should never be tempted to download the mail that are from unexpected or unknown sources.

Always be in a control of your actions as clicking on any links in emails from places such as Amazon, PayPal, and Ebay which you would not be expecting otherwise, if you do that that could be a possible threat to your security system.

Though Internet explorer is the most widely used browser but let me tell you that it has many bugs in it and most of the viruses are created targeting this browser only! So chose Firefox as our primary web browser over Internet Explorer.

Keep the track of the unusual activities happening and if observe your computer acting unusually like hard disk storage or CPU usage then keep the track by asking Task Manager for any unusual processes.

You should be aware of the processes that are running on your PC (press CTRL+ALT+DELETE and then click processes to see)and if you find anything unusual running the you can suspect your computer to be infected with a virus or adware, you'll usually see a process or two in the task manager that are unfamiliar.

If you are into downloading things that cause the RIAA to get upset, don't use P2P clients such as Limewire, WinMX, Grokster, or Kazaa. When using bittorrent, make sure you read a torrent's comments before downloading to make sure there are no viruses in it. If you absolutely must stay with P2P clients such as Limewire, keep a second computer (it can be anything, even something ten years old) for downloading your files. Scan the files for viruses before moving them to your main computer.

While downloading something then get it scanned by an antivirus before actually executing or opening it!

These are some of the precautionary measures and when there will be computers security attacks by viruses are common and so there's no need to be a "virusphobe".