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It is highly likely that an upcoming virus or Trojan could infect dozens, hundreds of computers, or thousands. This is especially true of network worms. This is why it is essential that antivirus software vendors are able to release protection updates quickly and effectively in order to stop these computer bugs from spreading.

Unfortunately, a number of AV programs are plagued by a variety of major problems that compromise their effectiveness. If you are using any of these products you must be aware of these issues so that you can take steps to safeguard yourself.

The first issue is that a lot of anti-virus programs can’t detect all Trojans and viruses. This is a direct result of the fact that virus writers and hackers create new kinds of malware. This means that far from any anti-virus program sold off the shelf or on the Web can offer a security level anywhere near 100 percent.

A common software issue may cause symptoms that look virus-related. It is important to always look for other causes of problems, before you suspect that your computer is infected with a virus. For instance, certain types of malware may cause a pop-up window to appear on the screen that shows pornographic images or news articles. Another indication is a display that displays advertisements for websites that you do not visit.