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Antivirus software is a type of security program that detects, prevents, and removes malware (malicious software) from computers, networks, and mobile devices. While originally designed to combat viruses, it now offers broader protection against various threats like worms, Trojans, ransomware, and spyware, employing signature-based, heuristic, and behavioral detection methods. Most antivirus programs run in the background, providing continuous, real-time protection to safeguard users' data and systems from harm.

How it works:

Detection: Antivirus software uses various techniques to identify malicious code.

Signature-based detection: Scans files and compares their unique code to a database of known virus signatures.

Heuristic analysis & Behavioral detection: Analyzes suspicious code for unusual or harmful activities to detect new or previously unknown (zero-day) threats.

Prevention: Once a threat is detected, the software blocks it from executing or entering your device.

Removal: If malware has already infected your system, the antivirus program can quarantine or delete the infected files to eliminate the threat.