Antivirus (or anti-virus) software is used to safeguard a computer from malware, including viruses, computer worms, and Trojan horses. Antivirus software may also remove or prevent spyware and adware, along with other forms of malicious programs.
Antivirus software is available in both free versions and versions that you purchase online via a subscription or in a store. An example of the best known, full-scale antivirus software packages for purchase are from TotalAV, ScanGuard, and PC Protect, Norton. AVG and Panda are two examples of free antivirus software, ScanGuard also offers powerful protection for Mac & Android Devices.
These days, antivirus software is often packaged with complimentary programs (network firewall, anti-malware, PC optimization) and sold as a suite of software. A computer is infected by a virus much like a human is: though contact with the outside world.
Antivirus software identifies, prevents, and removes malware from a computer system. Malware is any number of viruses and software bits that intend to harm the computer or steal information, such as viruses, adware, rootkits, backdoors, hijackers, keyloggers, spyware, trojans, and worms.
The benefits. The first benefit of having an up to date anti virus software is that you will be protected from viruses. It is the most common and well known form of malware that attacks computers. There are multiple types of viruses and each can have it’s own unique impact on different devices.
A virus signature is a unique string of bits, or the binary pattern, of a virus. The virus signature is like a fingerprint in that it can be used to detect and identify specific viruses. Anti-virussoftware uses the virus signature to scan for the presence of malicious code.