What isantivirus scanner

An antivirus scanner is a key feature of an antivirus software that protects your computer from malicious items such as viruses, worms, Trojans, spyware, and other malevolent programs. It works by scanning your hard drive to locate harmful items and isolate them from the rest of your system.

How does an antivirus scanner work?

An antivirus scanner works by comparing the codes of a file to the codes present in its virus database, also known as virus dictionary or signature. If the two sets of codes match, then the file is identified as a potential threat to your system.

Why is updating the database important?

The virus database needs to be updated regularly to keep up with the latest virus and malware trends. This is crucial in making sure your antivirus scanner is effective in identifying new viruses and suspicious files.

How can an antivirus scanner protect your computer?

An antivirus scanner protects your computer by quarantining or removing infected files. Once the scanner detects a potential threat, it can block it from executing any damage to your system. This way, you can secure your PC against cyber attacks and keep your data safe from intruders.


An antivirus scanner is an essential tool in safeguarding your computer from malicious software. It works by utilizing its virus database to identify and isolate potential threats and then securing the system by blocking any detected virus activity. Keeping the virus database up to date is critical for your antivirus scanner to stay effective and provide the best possible protection.


What is a virus dictionary?

A virus dictionary is a database consisting of codes that represent viruses and other malicious programs. Antivirus scanners use this database to compare codes and identify potential threats.

What is the difference between a manual and automatic scanner?

A manual scanner requires the user to initiate the scan process, while an automatic scanner runs a background scan of the system on a predefined schedule. Both methods are effective in protecting the system from viruses and other malicious items.

Can an antivirus scanner guarantee 100% protection from viruses?

No, while an antivirus scanner is a powerful tool in preventing and removing viruses, it cannot provide 100% protection against every malicious program. It is still recommended to practice safe browsing habits and regularly update your antivirus software.

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