(also virus scanner, virus scanning software)
An antivirus scanner is a cybersecurity tool specifically tasked with identifying viruses on a device. Antivirus scanners are rarely standalone apps — they are usually a part of comprehensive antivirus software apps that also include tools to quarantine and remove detected viruses.
See also: antivirus, computer virus, anti-malware
Antivirus scanners check a file’s digital signature (data derived from the file’s contents using a special cryptographic hash function) against a database of known malware signatures. If a match is found, the file is immediately flagged as malicious and presented to the user for containment or removal.
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