Antivirus software scans files by comparing certain bits of code to information in a database. If it finds a pattern in the database that duplicates the pattern. It considers it a virus and quarantines or deletes that particular file.
HOW THE ANTIVIRUS DETECTS VIRUS?
Antivirus software works by scanning incoming files or code passing through network traffic. The companies that build this software compile an extensive database. Known as viruses and malware and teach them how to detect, flag, and remove the software.
All program files (executable) that enter the system go through an antivirus scan. Anything matching the signature is classified as a virus and blacklisted. Files accepted by the user as good files are whitelist.
FEATURES OF ANTIVIRUS SOFTWARE
- Background Scanning
- Full System Scans
- Virus Definitions
BACKGROUND SCANNING
Background scanning is the mode of operation of the anti-virus for the mailbox role. Stored on Microsoft Exchange servers for viruses and other security threats with the latest version of the anti-virus database.
Antivirus software scans every file you open on the backend. Real-time protection of your computer from threats and other malicious attacks.
FULL SYSTEM SCANS
A full system scan is usually not required if you already have an on-access scan feature. A full system scan is essential if you are installing antivirus software for the first time. If you have recently updated your antivirus software.
A full system scan checks all boot records, files, and running processes that the user has access to. This will thoroughly scan your computer and will take longer.
VIRUS DEFINITIONS
Antivirus software identifies malware based on virus definitions. This is why we update new virus definitions. Malware definitions contain signatures for new viruses and other malware classified as wild. Malware is treated according to the type of virus protection.
It is very important for any antivirus company to update their definitions with the latest malware. To ensure PC protection against even the most recent forms of malicious threats.
HOW TO GET RID OF MALWARE?
- Signature-based detection
- Heuristic-based detection
- Behavioural-based detection
- Sandbox detection
- Data mining techniques
SIGNATURE-BASED DETECTION
This is most common with traditional antivirus software that scans all .EXE files and validates them with a list of known viruses and other types of malware. Or check if an unknown executable is showing a malfunction as a sign of an unknown virus.
HEURISTIC-BASED DETECTION
Heuristic techniques are deploy in most antivirus programs. This will help your antivirus software detect new malware, variants.
Antivirus programs use heuristics by running vulnerable programs or applications that contain suspicious code within a runtime virtual environment. This prevents vulnerable code from infecting the real environment.
BEHAVIOR-BASED DETECTION
In behavior based detection software is program to analyze and evaluate every single line of code.
SANDBOX DETECTION
Works most like behavior-based detection. Run any application in a virtual environment to keep track of what kind of work it does. By checking the behavior of the program you are login. Your antivirus software can identify whether the program is malicious.
DATA MINING TECHNOLOGY
Data mining involves exploring and analyzing large blocks of information to gather meaningful patterns and trends.
