If a new virus or Trojan is introduced to the Internet, the likelihood that it will be able to infect dozens, hundreds, or even thousands of computers is extremely high. This is especially true for network worms. It is therefore important that antivirus software providers are able to issue updates quickly and efficiently to prevent these computer pests becoming widespread.
Unfortunately, a number of AV programs are plagued by a variety of major issues that affect their effectiveness. You should be aware of the risks if you use one of these programs so that you can protect yourself.
The main issue is that many antivirus programs are unable to detect all viruses and Trojans. This is a direct result of the fact that hackers and virus writers constantly create new varieties of malware. In the end, not from any anti-virus software available off the shelf or on the Web can offer a security level anywhere near 100 100%.
Another issue is that many common software issues can cause symptoms that look like virus-related errors. It’s therefore vital that you always look for more common causes of problems before suspecting that a system is infected go by a virus. Some malware will display pornographic images on your screen or even news articles. A related symptom is when the screen constantly displays ads for websites you don’t visit.