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A computer virus [1] is a type of malware that, when executed, replicates itself by modifying other computer programs and inserting its own code into those programs. [2] [3] If this replication succeeds, the affected areas are then said to be "infected" with a computer virus, a metaphor derived from biological viruses. [4]
Scareware is part of a class of malicious software that includes rogue security software, ransomware and other scam software that tricks users into believing their computer is infected with a virus, then suggests that they download and pay for fake antivirus software to remove it. [2]
The first IBM PC virus in the wild was a boot sector virus dubbed (c)Brain, created in 1986 by the Farooq Alvi brothers in Pakistan. [14] Malware distributors would trick the user into booting or running from an infected device or medium. For example, a virus could make an infected computer add autorunnable code to any USB stick plugged into it.
Scan all your devices – Download a reputable anti-virus program that will scan your devices for malware or computer viruses. They should also be capable of detecting phishing programs or those ...
This usually happens without your knowledge. Virus or spyware may cause the problem that you are currently experiencing. Please refer to the "Scan your computer with McAfee" header of our Using McAfee: Features article to find out how to scan your computer for virus and spyware.
Pop-up ads constantly warning you that “your system is infected with a virus or malware”—and that their service will save you A pop-up ad like this can seem scary. Resist clicking.
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