how does a virus infect the system

Answer Posted / g.bhaskaran

Virus may infect the system through Internet,Floopies,Usb
drives, Cds, DVDs, and other portable devices. Virus is like
a mini program which spread to steal the data from one
computer to another and slowdown the performance or some
time rename the particular files to another. These will be
prevented by purchasing the Antivirus software and update it
on regular basis and run full scan on safe mode. these are
few examples.

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