Sunday, September 25, 2011

Understanding and TYPES OF ANTI-VIRUS




Antivirus is a type of software that is used to detect and remove computer viruses from computer systems. Also called Virus Protection Software. This application can determine whether a computer system has been infected with a virus or not. Generally, this software runs in the background and do a scan of all files that are accessed (opened, modified, or when saved). Most of the antivirus to work with some of the methods as below:
  • Detection using virus signature database (virus signaturedatabase): The workings of this antivirus is a widely used approachby the traditional antivirus, which look for signs of the presence of the virus by using a fraction of the virus code that has been analyzed by antivirus vendor, and has dikatalogisasi according to its type, size, power destruction and several other categories. This method is particularly fast and can reliably detect viruses that have been analyzed by the vendor antivirus, but it can not detect the new virus until the virus database. The new signature is installed into the system. Virus signature database is can be obtained from antivirus vendors and generally can be obtained free of charge via download or via subscription (subscription).
  • Detection by the way how the virus works: How it works antivirus Such an approach borrowed from the new technologies applied in the Intrusion Detection System (IDS). This method is often referred to as Behavior-blocking detection. This uses a policy (policy) that should be applied to detect the presence of a virus. If there behavior of software that is "not reasonable" according to the policy being applied, as well as software that tries to access address book to send a mass e-mails to e-mail list who are in the address book (the way it is often used by viruses to transmit the virus through e-mail), then the antivirus will stop the process that performed by the software. Antivirus also can isolate the code-code that is suspected as a virus until the administrator determines what will do next. The advantage of this method is the antivirus can detect any new viruses that have not been recognized by the virus database signature. The drawback, obviously because of the antivirus monitor the workings of the device software as a whole (not monitor the file), then the frequency of antiviral making a false alarm or "False Alarm" (if the configuration of the antivirus too "Hard"), or even allow the virus to multiply in the sistem (If the configuration of the antivirus too "soft"), false positives occur. Some manufacturers call this technique as a heuristic scanning. Antivirus which uses behavior-blocking detection are still few in number, but in the foreseeable future, most likely all the antivirus will use this way. Some antivirus also uses two methods above are well
The following table contains some antivirus products on the market and Web Sites:

AntiVirus Anyware = http://www.helpvirus.com
AVG Anti-Virus = http://www.grisoft.com
Vexira Antivirus = http://www.centralcommand.com
Antivirus wave =  http://www.cyber.com
Spider Guard = http://www.dials.ru
F-Prot Antivirus =  http://www.f-prot.com
F-Secure Anti-virus = http://www.fsecure.com
RAV AntiVirus =  http://www.rav.ro
AntiVir and AntiVir Personal Edition = http://www.antivir.de
ViRobot, DataMedic, Live-Call = http://www.hauri.co.kr
WinProof and ExcelProof  =  http://www.hiwire.com.sg
Kaspersky Anti-Virus (AVP) = http://www.kaspersky.com
VirusBuster II =  http://www.leprechaun.com.au
Email scanning services  =  http://www.messagelabs.com/viruseye
MKS Vir  =  http://www.mks.com.pl
McAfee Anti-Virus and McAfee Virus Scan  =  http://www.mcafee.com or http://www.nai.com
AV InVircible  =  http://www.invircible.com
Norman Virus Control  =  http://www.norman.no
Panda AntiVirus  =  http://www.pandasoftware.com

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