Antivirus programs are software designed to detect, prevent, and remove malicious software, commonly known as malware. They help protect computers and devices from threats such as viruses, worms, and spyware. By scanning files and monitoring system activity, these programs can identify harmful software before it causes damage. Most antivirus programs offer real-time protection, meaning they continuously check for threats as you use your device. They also provide regular updates to keep up with new types of malware. Popular antivirus solutions include Norton, McAfee, and Kaspersky, which offer various features to enhance security and user experience.