![]() Most antivirus programs set up scheduled full system scans, often once a week. A full system scan is helpful when you’ve just installed an antivirus program – it ensures there are no viruses lying dormant on your computer. If you download a virus to your computer, your antivirus program will notice immediately – you don’t have to manually initiate a scan first.įull-system scans can be useful for some things, however. ![]() (It’s also hard to be sure that the malware has ever been completely removed.)īecause of the on-access scanning, it isn’t usually necessary to run full-system scans. After a virus has infected your system, it’s much harder to remove. It’s possible to use an antivirus without on-access scanning, but this generally isn’t a good idea – viruses that exploit security holes in programs wouldn’t be caught by the scanner.
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