Question

what is the role of virus scanner

Answer 1

An anti-virus scanner is part and parcel of a free antivirussoftware, it scans a hard drive to detect malicious software in a computing device. Simply put, the goal-directed nature of a virus scanner software is to review and identify threats from viruses and programs.

Answer 2

How does Virus Scanner work?


Anti virus scanner works in a very traditional way, it uses a database called a virus dictionary which has lots of codes from different known viruses. When anti-virus scans a file, it will take a snippet of that code and compare it with the codes in their virus dictionary, if the files match then the virus attack on a computer is confirmed. In simple words, the entire scan and detection process relies on the repository (virus dictionary/signature) of known viruses. A robust virus scanner is more capable of tracking down viruses, worms, Trojans, Spyware and Malware software often circulated by Cyber criminals for their personal gains. When an intruder is identified to exist in the system files, the virus scanner secures the computer by blocking all activities of the virus.