COMPUTER FUNDAMENTALS

Detailed explanation-1: -Antivirus programs typically depend on stored virus signatures–unique strings of data that are characteristic of known malware to flag malicious software. The antivirus software uses these signatures to identify viruses it encounters that security experts have already identified and analyzed.

Detailed explanation-2: -A virus signature file is where your antivirus software stores all the data on known types of viruses. That file is updated often as cybersecurity experts discover new viruses daily. In the olden days, a virus signature was a snippet of malicious code that indicated that a file was infected by a specific virus.

Detailed explanation-3: -How Antivirus Works? Antivirus software scans the file comparing specific bits of code against information in its database and if it finds a pattern duplicating one in the database, it is considered a virus, and it will quarantine or delete that particular file.

Detailed explanation-4: -In order to deliver adequate computer protection, antivirus software should be capable of detecting a very wide range of existing malicious programs, detecting new modifications of known computer viruses, worms and Trojan viruses and detecting malicious software that’s located in packaged files.

Detailed explanation-5: -A virus signature (also known as a virus definition) is a file or multiple files that are downloaded by a security program to identify a computer virus. The files enable detection of malware by the antivirus (and other antimalware) software in conventional file scanning and breach detection systems.