Antivirus terminology refers to protection software designed to protect a computer from a variety of viruses that are harmful to computer systems. It also protects against malware including viruses, keyloggers, hijackers and Trojan horses.
A computer virus is a small software program or code that replicates itself and spreads from one computer to another. Entering this code on any computer can seriously interfere with the operation and functionality of your computer. These codes are usually attached to programs such as excel, word, outlook, power point, and word perfect. When running these programs, the accompanying virus is triggered to run, causing various problems, including file corruption, data deletion, and email spam.
Viruses are usually spread across the network via email, downloads or shared disks. If any infected files are attached to any of these sources, the specified computer system will be designed to be infected when the infected file is opened. Some common indications of a virus infection are slow operation, frequent restarts, improper application functionality, printing problems, unusual error messages, frequent hangs, distributed menus and dialogs, and double extensions of any attachments.
Computer viruses are very common in today's world. A new virus is introduced every day because the system must be updated regularly to ensure that the system is protected from viruses. There are two main ways to identify and destroy all infected files in the system.
The first method is the virus dictionary method, which shows all the basic information about the virus, their threats, their behavior and their causes. When a new virus is introduced, the data is entered into the dictionary by downloading the update. Various anti-virus software programs further use this information to identify and destroy suspicious and threatening files and attachments. Although this is a very effective plan, sometimes it does not work effectively. This is because it only captures viruses whose information is entered into the dictionary. This method does not consider any other suspicious movements, so another method is preferred.
The second method is the suspicious behavior method, which monitors the characteristics and behavior of all programs running on the computer. Any type of suspicious movement is detected as a virus infection in this way, and then a warning message is sent to the user to ensure that appropriate action is taken at the appropriate time. This method is more efficient than the dictionary method because it does not depend on any type of dictionary or stored information.
Sometimes even suspicious behavioral methods give false warnings, but users should be proficient in the technology. A good understanding and understanding of computers and the various threats that affect them are critical to ensuring a high level of protection against viruses and other threats.
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Orignal From: Anti-virus basic introduction
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