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Anti-virus software What is anti-virus software? An anti-virus program is a piece of utility software that is designed to protect your computer against viruses and other malicious software. Most anti-virus programs load on start-up and run in the background. Some examples of anti-virus software: AVG (Anti-virus Grisoft) Avast Kapersky Zone Alarm Norton Titanium McAfee Avira AntiVir Microsoft Security Essentials Types of malicious software: Viruses Malware Spyware Trojans Root Kits Adware Reasons to have anti-virus software: Not having an anti-virus program installed on your computer leaves it vulnerable to infection, viruses or malicious software can compromise your pc; slowing down its performance or disabling critical tasks. Key loggers, which are a type of spyware can be used to steal personal information such as passwords or financial data. It is important to have anti-virus software however having more than one running at the same time can cause conflicts which can slow down the PC or they could recognise each other as a virus. Anti virus software has a database of virus signatures which helps it to detect threats, once detected the anti-virus program can attempt to quarantine or remove the infection.
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