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Antivirus software shields your PC from malware infections. This includes viruses, Trojans, spyware, rootkits, adware and worms. It also helps to detect and repair the damage caused by these threats.

Antivirus software is a must for any computer or mobile device. They can protect against hacker attacks, detect and eliminate phishing attacks, spam emails, and ransomware. They can even scan and protect connected devices such as printers, SmartTVs, cameras and other devices from malware infections as well.

When selecting an antivirus program, choose one that has been thoroughly tested and has received favorable reviews from independent labs. Organizations such as Virus Bulletin, TechRadar, NSS Labs and AV Comparatives conduct tests and provide detailed reviews of different antivirus software options. They will tell you what security features are included and how well they work and whether the program is worth the money.

Traditional antivirus software relies upon the signature, or the binary pattern of a virus, to identify it. However hackers have kept pace with this by introducing oligomorphic and polymorphic viruses, which can encrypt a portion of themselves or alter their appearance in order to not be able to match the signatures of viruses found in antivirus databases. Modern antivirus software is designed to be more effective against these advanced malware threats by using sandbox analysis, which executes the file in an environment that simulates the total av virusscanner way it behaves prior to allowing it to be incorporated into the system.