The purpose of an antivirus software program is to detect, prevent, and remove malicious software, commonly known as malware. These programs provide real-time protection against various threats, including viruses, spyware, and ransomware, safeguarding computers and networks from potential damage. Antivirus software works by scanning files, monitoring system activities, and updating its database with known threats to ensure comprehensive security. Regular updates and scans are essential to maintain protection against new and evolving cyber threats.