Viruses are classified as simple virus, Encrypted Viruses, Polymorphic Viruses, Oligomorphic virus, Metamorphic Viruses. Viruses of the different types cannot be detected by single method. In research paper” Study and Comparison of Virus Detection Techniques “ determines that, as the characteristics of different viruses are different, the detection approaches should be different. Signature based virus detection is explained with pros and cons. Behavior based virus detection is used to overcome the issues related with traditional signature based virus identification. Logic formulae are an alternative to basic virus detection technique. In research paper” A Comparative Study of Virus Detection Techniques” determines that, to model the behavior of virus the use of “logic formulae” is one of the most recent developments in computer virus research. For the performance study of different antivirus, parameters like full, custom and quick scan are performed on the basis of time. Custom scan helps to remove unknown viruses, spyware, tracking cookies, potential threats and stealth programs, which can exploit and alter Windows system files. This scan is useful when the user likes to perform a scan for a particular folder, or if the user likes to scan an entire drive.
Depending on the hard drive and memory space a computer, it could take 40 minutes to several hours to accomplish a full scan.Ĭustom scan as name implies allows the user to customize which files and folders are to be scanned. Full scan checks every folder available, and hence takes longer time to perform the scan. Basically quick scan take less than 20-30 minutes to complete. Scanned areas include common areas of the hard drive, including the temporary files, computer memory and the operating system directory. A quick scan checks only the common areas for viruses available in a computer. Quick scan is used to scan the most infected area in a computer.
Full scan can be performed on external devices like digital camera, USB drivers and many others. It helps to scan files, local drive, folders on the system.
Because of the huge malware attack these days, Antivirus software is designed to handle all kinds of malignant payloads attacking from both trusted and un-trusted sources.Īntivirus software consists of different types of scan like full scan, quick scan and custom scan.įull scan is performed to ensure that the computer is free from viruses. Advanced virus may use undocumented operating system functionality and hidden techniques in order to prevail and avoid being detected. Antivirus software uses different techniques to identify malicious software, which often self-protect and mask deep in an operating system. Antivirus software is used to disinfect the infected program or to completely immaculate malicious software from the system. The physical view of an antivirus is shown in fig1. Antivirus is security software that focuses on providing better protection. The infection can be of different types such as Droppers, Trojans, root-kits, worms, viruses, and so on. Antivirus software plays an active role towards the prevention of hidden threats in web which can affect the computer.
The explosion with World Wide Web is always prone to the interaction of unknown threat which can ruin the computer. Thomas R, Nachamai M, Performance Investigation of Antivirus- A Comparative Analysis. KEYWORDS:Īntivirus Computer scan Virus Performance Testing Through the analysis Bitdefender performance is better than other selected antivirus. The parameters used to analyze the performance are quick scan, full scan and custom scan with respect to time.
The performance is tested based on the time acquired by each antivirus to act on a computer. This paper specifies the performance of (McAFee, Avast, Avira, Bitdefender, Norton) antivirus and its effectiveness on the computer.
Virus perform harmful task on affected host computer such as possessing on hard disk, CPU time, accessing private information etc.
Virus is a malicious software program which replicates by copying its code multiple times or by infecting any computer program (like modifying the existing program) which can affect its process. All gadgets which interact with open network are prone to virus. Antivirus as name implies prevent the devices such as computers, mobiles and pen-drive from viruses.