Antivirus is a common product that has been advertised as a common product, similar to a detergent, toothbrush or a car. However, even though they are widely used have flaws.
It is simply not possible for antivirus programs to keep up with the variety and quantity of new malware that is constantly being created. It’s an arms race, and not all antivirus software online or in stores can provide security that is near 100%.
Another issue is that Trojans and viruses can manipulate your computer’s software so that it cannot detect them. This may happen because the virus alters the settings of your antivirus program or it’s able to create false positives by utilizing one of its own functions or features.
Furthermore, there are a number of instances where the antivirus program does not recognize files even if they’re clearly dangerous. This happens because the anti-virus has not had the chance to add the specific file to its database yet. To do this it must analyse the file and then compare its contents with known malicious files in the antivirus’s database. This is a long and resource-intensive process. The more time it takes, the less accurate the detection. Furthermore, the antivirus needs to install filters for system events inside the computer kernel in order to analyze the data and then send it to its engine to be analyzed.