Ever since the inception of the Internet, there were a thousand unethical hackers in play – developing malicious codes and algorithms which are aimed at destroying files in the host computer. When developers realized that something had to be done, they created antivirus applications that safeguard the computer against these viruses.
Antivirus programs are computer applications that are designed to detect, prevent and disarm virus infections.
They are also effective in removing malware and viruses from the system.
They are designed to provide the ultimate protection to any computer system against potential hazards in the form of viruses, Trojans and worms both online and offline.
They identify threats to the computer and even secure the computer against identity theft.
Whether it is your home, workplace or even a corporate environment, you need to incorporate a certain level of safety and security in your system to prevent important information from being stolen or destroyed. Every antivirus program works in different ways. Some may check every file for malicious codes and replication loops while others may check the files for their license and publisher’s name.
A surveillance network is established by all antivirus applications that allow each and every file to be scanned. They are segregated into low-risk and high-risk files. Every antivirus software application has a database of virus definitions that the developer has to constantly update with new virus releases every day.
In most cases, a mere comparison of the file structure and definition with the known virus definitions can be used to brand the file as being infected.
A potential threat can be calculated from the hazards that they pose to the system on being opened. Further, they provide online support in the form of firewalls and internet security systems that build a secure wall between your system or your network and the Internet.
Typically, every antivirus product needs you to register and pay for their services; they require you to purchase a license from them for their frequent updates and to keep your system secure.
In case you are purchasing licenses for your office network, you may even get a discount for multiple licenses. It is always better to go for an application which has the maximum number of virus definitions in their database and provide frequent updates.