Antivirus software is a type of computer program that is designed to detect, prevent, and remove malicious software, or malware, from a computer system. Here are the key features of antivirus software:

Virus detection: Antivirus software uses various techniques to detect viruses and other types of malware. These techniques include signature-based detection, behavior-based detection, and heuristics-based detection.

Real-time scanning: Antivirus software constantly scans the computer system in real-time for malware, and automatically removes or quarantines any threats that are detected.

Automatic updates: Antivirus software automatically updates its virus definitions and software versions to ensure that it is up-to-date with the latest threats.

Quarantine and removal: Antivirus software quarantines infected files to prevent them from further spreading the infection, and provides users with options to remove or repair the infected files.

Email scanning: Many antivirus software includes an email scanner that checks incoming and outgoing emails for malware.